UNDERWATER STROBE FINDER, 2nd Edition – Models, specifications and prices.

I.  INTRODUCTION

II. AVAILABLE STROBES, SHORT LIST

III. STROBE SPECIFICATIONS, DETAILS & PRICES, LONG LIST 

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I. INTRODUCTION

UW strobe quality and power have improved dramatically in the years since the popular Underwater Strobe Finder appeared here in 2004 (1), but unfortunately it is no longer accessible. Since then new UW strobes have appeared, others have retired and problems with some have surfaced. Previous excellent reviews (2), containing much still useful information, also have been overtaken by the loss of some strobes and the rapid improvements in strobe technology.

Strobe Warranty: As strobes are known to fail, often within their first year, it is wise to have a Strobe Warranty:  Some manufacturers warrant their strobe against defects, and service other problems for one year from date of purchase, many do not. Be aware that the warranty often is only valid if the strobe was purchased from a dealer licensed by the manufacturer. One can find if a dealer sells strobes under warranty via the internet. For example, to the query “Inon strobe dealer locator”, the reply was:

Inon Customer Support [World Network] www.inon.jp>customer.network. 

 For Sealife it was: “https://www.sealife-cameras.com > dealer locator.” One proceeds from there.  

For easy access the strobes are listed alphabetically, first in Part II as a Short Strobe List, followed in Part III by a more complete list of Strobe Specifications and Details.

To maintain the Finder’s usefulness, I hope the kind reader will take the time to post additions, corrections and developments.

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References:
1. Underwater Strobe Finder.  Wetpixel.com/forums/index.php?topic/6501-underwater-strobe-finder/
2. Underwater Strobe Guide. Scott Gietler & Bill Van Antwerp: https://uwphotographyguide.com/underwater-photography-strobes

 

II. AVAILABLE STROBES: SHORT LIST. 

HARTENBERGER STROBES, 3 models with Nikonos-V sync connector and built-in battery: b125 eu 1,298.  b250 eu 1,598. b625 eu 1,998

TTL-Mode (automatic exposure control from the camera).

6 Manual Power settings each of 1 f-stop.

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iDive Symbiosis, see iTorch Symbiosis

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IKELITE STROBES. All Ikelite strobes are famous for excellent lighting, solid build and long life. Lithium battery has been updated for improved performance. Ikelite is a strong advocate of TTL via sync cord. To use a fiber optic cable a special sync cord to fiber optic converter is needed. Ikelite stobes and flash tubes are justly known for being long-lasting and problem free.

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Ikelite AF35 and DS-200--No longer sold, great reputation

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Ikelite DS51, US$450, for compact cameras or for dSLR macro shooting. Slow, no optical TTL. Said to provide perfect True TTL with compatible Ikelite & Aquatica housings. Limited output settings. Best purchased with a package including arm and cable – With Flex Arm or With Ball & Joint Arm.

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Ikelite DS160, US$799 (replaces the DS-125), strong output, fast recycle, warmer color output than most strobes, true TTL with compatible Ikelite & Aquatica housings,  Heavy and bulky, no fiber optic, Ikelite does not believe in fiber optic, only electric cable. Top uw photographers use this and the DS161 strobe.

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Ikelite DS161, US$949, has 500 lumen LED video light and new lithium battery.

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INON STROBES

Inon S-2000. MSRP: US$479  Fiberoptic cable, 4AA batts, GN 20, for macro photography and compact cameras. Even circular light,

The discontinued D2000 and Z240 were issued in 4 editions, for both Type 4, the last, is the best. The D2000 Type 4 costs less than the S-2000 and is more powerful.

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Inon D-200, new version of the D2000, $500 Fiberoptic cable, 4 AA batts. The Inon D2000, Types 3 and 4, the previous versions of the D200, are as useful and much less expensive.

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Inon Z-330, new and much improved version of the Z240,  US$600 to $699. Sync cord and Fiberoptic cable, 4AA batts. GN33, strongest Inon available. Rotating light shade to reduce backscatter.

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Inon D-2000, Types 1 to 4. Discontinued, available via Wetpixel Classifieds and eBay. Good Used Buy. about US$280. Fiberoptic cable, 4AA batts

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Inon Z-240, Types 1 to 4. Discontinued. Good Used Buy, but watch out for brown or going-bad flash tubes. The two pushbuttons have magnets that rust and give problems.  About $240 on eBay or Wetpixel. Sync cord and Fiberoptic cable, 4AA batts

It is still a popular strobe, in demand in the used strobe market

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INTOVA  PX21, 2AAA batts, Mini Flash slave, no cable connection   $95

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ISOTTA RED64 STROBE  ?4AA ??Fiberoptic cable,   Guide Number: f/22 in water. Strobe not yet on the market.

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iTorch SYMBIOSIS: aka iDive, iDive Site: i-DiveSite,

Symbiosis SS3 Underwater Strobe & Video Light, 2800 lumens, two 18650 Li batteries,  $399.-

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Symbiosis Pro SS-2R with built-in video light  $700. Two in one video light and strobe. Fiber optic trigger. Long batterylife and fast recycle time.

Information is outdated and confusing, brand names have changed. SS-2 model has LCD panel on the back for easier control. 

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NIKON SB-N10, 4 AA, Fiberoptic. An overpriced and probably discontinued cousin of the late Sea&Sea YS-D1.  eBay price about $300. 

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Olympus UFL-2 Underwater Strobe – Discontinued. The UFL-2 was specially designed for use with Olympus digital cameras and compatible underwater cases. $560 

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OLYMPUS UFL-3, GN 22, 4 AA, Fiberoptic.  $499 

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ONEUW  2 models  160X Underwater Digital Strobe for Nikon Cameras, and 160X Underwater Digital Strobe for Canon Cameras. $1,700. ea. Spare Battery Pack $175.  No Specification Sheet available.

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RETRA Strobes: Retra V1, Flash Prime $731, Flash Pro $915.  Fiberoptic cable, discontinued in 2018. V2 Flash Prime and Flash Pro were released at the end of 2019. 

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SEA&SEA  

Three current models: YS-01, YS-03 and YS-D2J; plus four good discontinued models, the YS-02, YS-D100, D100a and YS-D250.

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S&S YS-01 Strobe  $430 4 AA batts, fiberoptic cable, good power, comparable to the Inon S2000, for compact cameras.

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S&S YS-03 Strobe $300  Fiberoptic 4 AA batts, no target light, has only TTL flash control with very good performance.  

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S&S YS-D2J

Updated version of the YS-D2 – Made in Japan. 4AA batts. Issues fixed, very popular. US$600 to $690.

Most popular, and together with the Inon Z330 is a top choice for all around performance, with powerful flash, long battery life, TTL exposure, target light, easy to set controls.

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Obsolete models: YS-02, YS-17, YS30, YS50, YS60, YS90,YS110, YS120,

The YS-D2 made in China should be avoided as the flash tube was of defective manufacture and shatters or burns.

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SEACAM, Seaflash models: 

60DTTL $1,950, 100DTTL $2371, 150DTTL $2,933, 1500TTL $3,307. 

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SEAFROGS two models, sync cord & fiberoptic, ST-100 and ST100Pro, about $327.

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SEALIFE, Digital Pro Flash SL96101 $ 230, Sea Dragon SL9631, $349. 4AA batts.

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ULTRAMAX  USDX-1 Digital Strobe Head - $160, 4AA batts, fiberoptic cable, YS Mount.

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WEEFINE Ring Torch/Strobe, 3,000 lumens, $325-. LED Strobe, heavy for a compact camera.

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EPOQUE, SUNPAK, & SUBTRONIC, no longer sold.

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                                                              Comparison of Some Strobes

This Table is an updated version of the table by Gietler and Van Antwerp, ref 2

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End of Short Strobe List

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III. STROBE SPECIFICATIONS AND DETAILS, LONG LIST

Some strobe makers provide a wealth of information, others very little. All details and claims are the manufacturers, the prospective buyer need take them with a grain of salt.

 

HARTENBERGER, 3 strobe models with sync cord and built-in battery: Model b125 eu 1,298.  b250 eu 1,598. b625 eu 1,998

Conception with know how:

Over 30 years of experience in underwater technology have gone into Hartenberger underwater strobes. Our concept for underwater strobes has led the industry for years.

A combination of proven traditional, and modern digital High Tech electronics have gone into our product development making them milestones in the industry for underwater strobe technology.

All the important components of our strobes such as the reflector, pilot light, cell packs and synchronisation cables have been developed as “plug-in” modular units. This allows numerous possibilities for technical details, functionalism and esthetical appearance.

Relying on our years of experience in manufacturing underwater strobes, enables us to give a 5 year guarantee against manufacturers defects on all the Aluminium, Plastic and Stainless Steel components. There is a 2 year guarantee on the electronics of the strobes.

Housing: A centre piece of our strobes is the specially constructed Housing, with tried and tested applications over the years. The individual parts are turned on CNC lathes using marine aluminium alloy.

To provide the best surface treatment, the entire housing is coated with AHC (Aluminium Hard Coating). This results in a surface with much more chemical and abrasion resistance than a standard anodised finish. The chemical resistance of the AHC coating is even better than stainless steel and can be found in various industrial and military applications.

Despite the fact that the front and rear housing covers can be opened without tools, the sealing is provided by special compression and axial O Rings. We only use high quality Viton O- Rings.

The mounting point on the lower side of the strobe allows a multitude of mounts to be used (M6, M8 and M10 Threads).

The switches have double O Ring seals and provide years of reliable, trouble free use.

Ergonomics

Due to the ergonomically positioned switches on the side of the strobe, the settings can be easily monitored and/or adjusted without any difficulties and your camera and strobe position underwater remains undisturbed when reaching for the switches in setting up your shots. 

Electronics

Choosing modern and over-dimensional components in combination with tested micro-processor electronics results in one of the most powerful and fastest recycling underwater strobes in the world.

The core of the Hartenberger strobes is the powerful and robust transformer. This allows a power rating of 625 watt/seconds and a recycle time at full power setting of 0,8 seconds !! (see technical specifications). The recycle time using lower power settings allows more than 10 frames per second (vital for fast motor drive use).

After recharging the condensers, the transformer switches off automatically. This reduces cell use and also avoids the prolonged radiation caused by the charging which disturbs some underwater life, causing them to flee.

The strobe ready signal appears on the switch panel of the strobe and in the viewfinder of the camera and easily visible. At the same time, a short acoustical signal (beep) can be heard.

The camera shutter speed is automatically set according to the synchronization.

A special technical feature of our strobes is the extremely short flash duration hereditary in ring formed strobe tubes.

This is necessary because some Nikon cameras (i.e. F5, F100, F90...) require the entire light for a correctly exposed picture within 1/500th of a second.

Should the strobe require longer than this to achieve the correct exposure, then the camera will not send out the TTL cut off signal to the strobe!!!

In this case, the remaining energy is released as light and results in an uncontrolled, overexposed picture. 

Mode-Settings

The right switch sets the following modes

·       OFF

·       ON without pilot light

·       ON with 100 % pilot light

·       ON with 50 % pilot light

·       ON with 25 % pilot light

·       Slave sensor with 100% pilot light

·       Slave sensor without Pilot light

·       Automatic Signal (for attention)

In this positions, the following signals are possible and generated automatically:

1. Pilot light with International SOS signal (3 x short, 3 x long, 3 x short)

2. Strobe light with SOS signal (3 x short, 3 x long, 3 x short)

3. Continuous Strobe every 15/30/60 Seconds at Full, -1 and -2 power settings

The strobe can be used as a slave unit (strobe will be activated by a primary strobe) either with or without the pilot light.

The slave sensor is not sensitive to natural daylight, but reacts very sensitively to the sharp light impulses from strobes. This allows the strobe to be used underwater at long distances from the primary strobe.

The 6 manual power settings are available for the slave mode.

A special feature is the TTL slave mode. In this mode, the amount of light which the slave produces is remotely controlled by and matched to the primary strobe!

Power-Settings

Tue following modes can be set with the left switch:

·       TTL-Mode (automatic exposure control from the camera).

·       6 Manual Power settings each of 1 f-stop.

The automatic TTL control is available for almost all types of camera and is built in as standard for the following makes of camera: Pentax, Canon EOS, NIKON F5/F4/F100/F, NIKONOS V and NIKONOS RS.

The electronics automatically recognises the type of TTL control from the connected camera.

Should there be an underexposure in TTL mode, an acoustical alarm will sound. A warning will also appear optically in the following forms: blinking ready light in the viewfinder, blinking pilot light and blinking red light on the switch panel on the side of the strobe. 

Pilot-light

The dimmable pilot light allows the user to adapt the strength of the pilot light to the ambient conditions. At reduced settings, energy is saved and the burn time is proportionally increased.

Special version without surcharge:

The pilot light can be controlled from the camera housing. This feature simply requires the appropriate switch on the camera housing.

The same switch can be used to trigger the strobe test mode. When this is activated, the strobe releases approx. 40 weak flashes within 2 seconds. This allows the photographer to judge the flood of light and establish any areas of shadow.

The beam of the pilot light is spot formed with a strong concentration in the middle point and a soft illumination of the surrounding areas. (This reduces the tunnel vision effect during night dives).

The pilot light is a plug in unit and is user replaceable.

The standard 6 V high temperature halogen Bulb is available rated at either 10 or 20 watts.

Reflectors

The plug in reflector unit with 95° beam as standard can be replaced within seconds (250/625 TTL).

A different colour temperature can be achieved by replacing the reflector. Reflectors are available with the following (approx.) colours.. 5500, 5000(standard), 4500 and 4000 Kelvin.

The crystal clear dome port can be replaced with a matt dome port. The matt port diffuses the light and generates a softer light from the strobe. The effect on the power output of the strobe is hardly noticeable.(approx-0.5/-1). 

Alarms

If by mistake you try and take a picture without first switching on the strobe, an optical and acoustical warning will get your attention.

A discharge protection prevents the cells from an uncontrolled discharge. This is indicated by an optical and acoustical alarm.

The transformer is deactivated when the cells are nearly empty, it can however be activated manually for 3-5 more additional frames.

For safety reasons (ascent), the pilot light remains functional for a few minutes.

Should water enter the housing there is a sensor which immediately detects the smallest amount of moisture. For safety reasons, the condenser is immediately discharged (automatically generating a flash). After this discharge, the pilot light and all red LED lights will blink permanently and an acoustical alarm will sound. 

Cell-packs

To remove the standard cell pack (Nickel-Cadmium) for charging, first unscrew the rear cover. The complete plug-in cell pack can then be removed or replaced with a charged pack within seconds.

The electronics are separated from the cell pack housing by O-Ring seals, this prevents moisture that has entered the cell pack housing from entering the strobe’s electronics. 

Synchronisation-Cable

The supplied standard synchronisation cable with the NIKONOS-V plug can be removed from the strobe allowing the slave mode without a cable dangling from the housing. This also means that a defective cable (expendable component) can be user replaced without sending the strobe to an authorized repair workshop.

A special feature first developed by us is the double seal NIKONOS Plug. The innovative positioning of the second O Ring provides 100% more safety and security in sealing. The plug’s thread is also kept dry whereas the original plug’s thread is surrounded by water. This prevents the vacuum which is generated when removing the plug, thus sucking water into the socket. Corrosion of the threads is also avoided. 

Hartenberger Technical Specifications

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IKELITE STROBES

Ikelite AF35  --No longer sold by Ikelite.

MSRP: US$429.95 (Includes tray & arm)

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Ikelite DS51

MSRP: US$450

The Ikelite DS-51 Substrobe replaces the DS50, which has been a favorite of underwater photographers the world over. In addition to incorporating all the same great features of the DS-50, the DS-51 provides a Manual Exposure Mode with six (6) manual power settings in one-half f-stop increments for precise illumination of subjects underwater.The compact, lightweight and affordable Ikelite DS51 Substrobe is an excellent choice for many underwater photographers. Its digital electronics make it fully compatible with digital cameras as well as traditional film cameras such as the Nikonos. The strobe can easily switch between TTL/Auto and any of the six (6) manual power settings for complete control over lighting the subject. The DS51’s intensity and angle of coverage make it equally suited for macro and general photography. The strobe’s wide-angle diffuser increases the angle-of-coverage up to 80 degrees, softens the light and helps to reduce backscatter. The DS-51 Substrobe’s power rivals strobes twice its size, recycles in a quick 3.5 seconds, and provides 200+ flashes on a set of batteries. Much shorter recycle times and more flashes per set of batteries can be realized during TTL/Auto operation.

When connected with a sync cord to compatible Ikelite housings, or the Nikonos camera system, the DS51 Substrobe offers TTL/Auto and Manual Mode. When used with other manufacturers housings, the DS51 Substrobe can only be used in the Manual Mode utilizing the six (6) power settings.

The DS51 is compatible with the Ikelite DS Sensor and EV-Controller. When used with the EV-Controller, the DS51 Mode switch is set to the TTL/Auto setting and the EV-Controller then provides ten (10) power settings in half-stop increments.
Specifications:

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Ikelite DS160

MSRP: US$799

The DS160 series strobes are specifically designed for underwater use to provide the most colorful and natural wide angle lighting on the market.  A professional grade round xenon flash tube and powder coated reflector produce perfectly a soft, stunningly warm 4800K light.

Optional accessories for corded, fiber optic, or remote triggering.

The built-in modeling light automatically turns off and back on when taking a still photo to avoid over exposure.

Our famous quick-release toggle system attaches the battery pack with ease and confidence.  A high capacity rechargeable NiMH battery pack provides longevity and rapid firing that no set of AA batteries can provide.

When combined with a compatible TTL system, the DS160 automatically adjusts brightness to provide perfect exposure whether you’re shooting macro, portrait or wide angle.  Focus on your camera settings and composition and enjoy the increased number of flashes and even faster recycle time you’ll get when working with a TTL system.

RECYCLE TIME + BATTERY LIFE NiMH batteries are work horses, and a great choice for high powered rechargeable devices due to their performance and reliability at a more affordable price point than lithium ion.  This high capacity battery pack provides professional quality power and speed flash after flash, well beyond the capabilities of even the best AA-cell batteries.

Shooting full power flashes?  Expect a lightning fast 1.6 second recycle time and over 225 flashes on a single charge.  Shooting TTL or in a fractional power setting? You’ll get very close to instantaneous recycle time and up to 3X as many flashes... plenty for a day of diving!  This battery recharges in half the time of its Li-Ion counterpart for quick topping off before your night dive.

Our famous quick-release toggle system attaches the battery pack with ease and confidence, making a flooded battery virtually impossible. 

SMART CHARGING.  The included Smart Charger for NiMH accepts variable voltage in the 100-240V range.  Smart charging provides safety and helps to increase the lifetime of the pack by switching over to a trickle charge when the battery pack is fully recharged.  Feedback on charging cycle is indicated by an LED on the front of the charger.

This charger is compatible with NiMH battery packs only.  (Chargers designed for NiMH or NiCad batteries cannot be used with Li-Ion technology.)

WHAT’S INCLUDED:    DS160 strobe front,   Rechargeable NiMH battery pack,  1” Ball Mount is now included, Smart Charger for NiMH with north American a.c. plug, Diffuser, Waterproof bulkhead cap, Silicone lubricant 1cc tube, 2 year limited warranty on DS160 strobe, 1 year limited warranty on NiMH battery pack, charger, arm + sync cord.

SPECIFICATIONS 

328 ft / 100m depth rating

TTL mode with compatibe Ikelite TTL systems

Manual power modes in 10 ½-stop increments

205 lumen LED modeling light

Color temperature 4800K

Guide number 24 m at ISO 100

Coverage angle 90° without diffuser - 100° with diffuser

Over 225 full power flashes per charge

Up to 3X as many flashes per charge in TTL or fractional powers

Lightning fast recycle time 1.5 seconds or less

Ikelite ICS 5-pin bulkhead

Rechargeable 7.2V 3300mAh NiMH battery pack

Fast 2.5-hour recharge time

Dimensions 3.75 inch diameter x 7 length in (96 x 179 mm)

Weight 2.7 lb (1243 g)

Slightly negative buoyancy in salt water

SPARE PARTS

Ikelite 0591.3 Diffuser 

Ikelite 0132.36 Battery pack o-ring 

Ikelite 0083.92 Smart Charger NiMH

Ikelite 9104.5 Waterproof bulkhead cap 

Ikelite 0184.2 Silicone lubricant 2cc resealable tube 

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Ikelite DS161

MSRP: US$949

PRODUCT DETAILS

The DS161 combines power with wide angle coverage to give you the most bang for your buck.

The quality of light is exceptional due to a round flash tube and custom powder coated reflector designed specifically to deliver the softest, most even coverage possible.  Strobes with a straight flashtube may be capable of high powers, but require the addition of a diffuser to spread out their sharp, rectangular beam pattern and reduce the harsh hot spot.  The DS160 beam is designed to be perfectly soft and wide spread through its reflector design, and is capable of providing you the coverage and power you want and avoiding the one f/stop loss caused by adding a diffuser.

Both our DS160 and DS161 strobes are legendary for their ability to keep up in rapid firing situations—a cut above any flash on the market.  Electrical sync connection and a high-capacity battery pack provide the speed you need to capture fast moving subjects like sharks and sailfish at just the right millisecond.

When combined with a compatible TTL system, the DS161 automatically adjusts brightness to provide perfect exposure whether you’re shooting macro, portrait or wide angle.  Focus on your camera settings and composition and enjoy the increased number of flashes and even faster recycle time you’ll get when working with a TTL system.

BUILT-IN VIDEO LIGHT

Instead of a simple aiming light, the DS161 includes a super even, 500 lumen video light. The light is suitable for close-up, macro, portrait, and wide angle fill-in work or as a focus assist light. Output is adjustable in 10 brightness settings plus an SOS mode for emergency situations. Automatic shut-off when the flash fires ensures that the video light will have no undesired effects on still photos.

RECYCLE TIME + BATTERY LIFE

NiMH batteries are work horses, and a great choice for high powered rechargeable devices due to their performance and reliability at a more affordable price point than lithium ion.  This high capacity battery pack provides professional quality power and speed flash after flash, well beyond the capabilities of even the best AA-cell batteries.

Shooting full power flashes?  Expect a lightning fast 1.6 second recycle time and over 225 flashes on a single charge.  Shooting TTL or in a fractional power setting? You’ll get very close to instantaneous recycle time and up to 3X as many flashes... plenty for a day of diving!  This battery recharges in half the time of its Li-Ion counterpart for quick topping off before your night dive.

Our famous quick-release toggle system attaches the battery pack with ease and confidence, making a flooded battery virtually impossible. 

SMART CHARGING

The included Smart Charger for NiMH accepts variable voltage in the 100-240V range.  Smart charging provides safety and helps to increase the lifetime of the pack by switching over to a trickle charge when the battery pack is fully recharged.  Feedback on charging cycle is indicated by an LED on the front of the charger.

This charger is compatible with NiMH battery packs only.  (Chargers designed for NiMH or NiCad batteries cannot be used with Li-Ion technology.)

WHAT’S INCLUDED

DS161 strobe front

Rechargeable NiMH battery pack

1” Ball Mount is now included!

Smart Charger for NiMH with north American a.c. plug.

Diffuser

Waterproof bulkhead cap

Silicone lubricant 1cc tube

2 year limited warranty on DS160 strobe

                     1 year limited warranty on NiMH battery pack, charger, arm + sync cord 

SPECIFICATIONS 

328 ft / 100m depth rating

TTL mode with compatibe Ikelite TTL systems

Manual power modes in 10 ½-stop increments

500 lumen LED video light

Color temperature 4800K

Guide number 24 m at ISO 100

Coverage angle 90° without diffuser - 100° with diffuser

Over 225 full power flashes per charge

Up to 3X as many flashes per charge in TTL or fractional powers

Lightning fast recycle time 1.6 seconds or less

Ikelite ICS 5-pin bulkhead

Rechargeable 7.2V 3300mAh NiMH battery pack

Fast 2.5-hour recharge time

Dimensions 3.75 x 7 in (96 x 179 mm)

Weight 2.7 lb (1243 g)

                     Slightly negative buoyancy in salt water
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INON STROBES

Inon S-2000 S-TTL Underwater Strobe. MSRP: US$479  Fiberoptic cable, 4AA batts

                                 Same fundamentals as D-2000 in ultra compact body.

                                 Guide Number 20.

                                 Circular 110 degree beam coverage with a diffuser

                                 “S-TTL” mode & 12 step “Manual”

                                 Built-in EV. Controller to fine-tune S-TTL Auto exposure

                                 Next generation wireless TTL

                                 4 x AA batteries operation

                                 Recycle time of 1.5 seconds at full flash

Features

Marginally downsized with high-performance. 64mm / 2.5in x 83.1mm / 3.3in x 106.5mm / 4.2in (W x H x D). Successfully designed world smallest body size as 4AA operated underwater strobe with its optimized inner components layout and trimming off unnecessary space. Best suits with a compact digital camera, supporting digital SLR camera with its mobility, incredible compact size even as dual strobes and high performance. The S-2000 totally changes underwater strobe concepts.

Not only compact strobe. The S-2000 is operated by 4x AA batteries to provide fundamental features of strobe though 4x AA batteries operation is hostile to downsizing. The same level of basic features and durability as the D-2000 and marvelous high performance are driven with its compact body. Together with powerful and substantial Guide Number 20, the S-2000 benefits you with fast recycle time (minimum 1.5sec. at full flash) and remarkable flash capacity thanks to less inner wiring and efficient component parts. In addition to reliable and super accurate S-TTL Auto mode mode, 12 step Manual mode supports professional lighting. Other features include the EV. Controller to make fine adjustment when shooting in S-TTL Auto and auto-switching function to accommodate to various pre-flash type (single or double pre-flash) digital camera.

Next generation wireless TTL function. The S-2000 strobe has ultra sensitive slave sensor which is 100 times more sensitive comparing to the slave sensor of D-2000 Type 3 strobe and successfully enables to support wireless S-TTL Auto flash control without using an Optical D Cable. Also the sensitivity of the slave sensor dramatically lengthens synch range of Manual flash mode. The package includes a Wireless Connection Kit which optimizes built-in flash light reception at the slave sensor. It is easy to use wireless S-TTL Auto shooting simply attached the strobe on compatible underwater housing via INON Shoe Base Set or Grip Base D4. You can enjoy shooting vivid underwater world with powerful external strobe with holding a rig one hand. Using Optical D Cable connection ensures more reliable flash sync in severe condition with bright ambient light like just under surface.

Unlimited expandability with optical cable system. The “S-2000” strobe is equipped with a connector mount on the front side to receive TTL signal of the strobe. One “S-2000” strobe can be linked to maximum two strobes via optical cables and operate them in [S-TTL Auto mode]. This optical cable system benefits you to add [S-TTL Auto] operating strobe easily by connecting with an optical cable to pick up S-TTL control signal is piched up from your camera system. This expandability makes underwater studio with perfect lighting real.

Natural color even with a diffuser. Beam angle without a diffuser is 105° x95° which increase to circular 100° with supplied -0.5 White Diffuser for S-2000. The diffuser is made from customized material not to change color of strobe light where strobe color temperature drops only 100K (Kelvin). You can have same color tone between macro shooting without the diffuser and wide shooting with the diffuser to widen strobe beam angle.

Specifications:

                                 Strobe Control: Mode S-TTL Auto / Manual / TTL Auto (*3)

                                 Connection: Wireless connection / Optical D Cable / Optical D Slave Cable

                                 Guide Number:

                                                        20 [without a diffuser]

                                                        17 [with supplied -0.5 White Diffuser]

                                 Settable Flash Output: 20(FULL) 17(-0.5) 14(-1) 12(-1.5) 10(-2) 8.4(-2.5) 7.1(-3) 5.9(-3.5) 5.0(-4) 4.2(-4.5) 3.5(-5) 3.0(-5.5) (12 steps in 1/2EV increments)

                                 Beam Angle:

                                                        105°(horizontal) x 95°(vertical) [without a diffuser]

                                                        110° x 110°circular beam [with supplied -0.5 white diffuser]

                                 Color Temp.:

                                                        5500K [flash light, without a diffuser]

                                                        5400K [flash light, with supplied -0.5 white diffuser]

                                 Recycle Time

                                                        Approx. 1.5 seconds minimum: [”eneloop” batteries]

                                                        Approx. 1.5 seconds minimum: [NiMH batteries]

                                                        Approx. 1.6 seconds minimum: [Alkaline batteries]

                                                        Approx. 2.1 seconds minimum: [Lithium 1.5V batteries]

                                 Flash Capacity

                                                        Approx. 450 flashes: [”eneloop” batteries]

                                                        Approx. 570 flashes: [NiMH batteries]

                                                        Approx. 430 flashes: [Alkaline batteries]

                                                        Approx. 670 flashes: [Lithium 1.5V batteries]

                                 Compatible Batteries:

                                                        AA “eneloop”(HR-3UTG) x 4, or “new generation”NiMH batteries x 4

                                                        AA NiMH x 4 [good quality] ,

                                                        AA Alkaline x 4,

                                                        AA Lithium (1.5V) x 4

                                 Dimensions:

                                                        Diameter: 64mm / 2.5in.

                                                        Height: 83.1mm / 3.3in.

                                                        Depth: 106.5mm / 4.2in.

                                 Weight:

                                                        [air] 295g / 10.4oz (without batteries)

                                                        [underwater] Approx. 69g / 2.4oz (with 4 “eneloop” batteries)

                                 Working Temperature: 0°C - 30°C / 32°F - 86°F [water temperature]

                                 Storage Temperature: 0°C - 30°C / 32°F - 86°F [air temperature] +50°C / 122°F (temporary allowable temperature limit)

                                 Depth Rating: 100m / 328ft

                                 Body Material / Color: Polycarbonate resin / red

                                 Package Contents: -0.5 White Diffuser, Magnet, Magnet Screw, Spare O-ring (Battery Box), INON Grease, Wireless Connection Kit
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Inon D-2000, Discontinued, available in Wetpixel Classifieds and eBay.

 US$380 to $400

Fiberoptic cable, 4AA batts.

   This mid-size strobe functions very well, and works as well is most situations as larger and more expensive strobes.

Guide Number 20, Wide 100_ circular distribution even without a diffuser. Patented T-shape Twin Flash  produces guide number 20 (*1) with wide circular beam angle 100_ even without a diffuser to deliver strobe light wide area. The beam coverage increases to 110_ with a diffuser. This ideal circular strobe light distribution does not require locating the strobe parallel to camera to support sophisticated and flexible angled lighting with strobe arm.

The D-2000 offers semi-automatic 24 step External Auto mode with 1/4EV. increments which determines strobe output based on onboard sensor to use for a particular situation where S-TTL Auto does not provide satisfied result, and supports professional needs as well by its 13 step Manual mode with 1/2EV. increments.

Conventional TTL exposure control is also supported for film camera system (*2).

(*2) Compatible with optically connected INON “X1 series” or “Optical Converter TTL” only.

Built-in high-intensity 180 lumen power LED Focus Light

The Focus Light assists focusing in dark underwater without influence on an image by shutter-linked auto OFF feature (*3). The Type 4 has upgraded 180 lumen LED to benefit you to use as independent diving flashlight as well.

(*3) Focus Light may be recorded on an image depending on camera system, connection method and shooting condition.

Integral pre-flash mode detecting function

Fully compatible with a camera like Nikon digital SLR cameras D700/D300/D200/D90/D80 which alter number of pre-flash between once or twice depending on shooting condition making total flashes twice to three times. The D-2000 automatically identifies number of pre-flash to activate adequate program to support proper functioning of External Auto, Manual as well as precise S-TTL Auto mode.

Specs:

=

Inon Z-240 Underwater Strobe (Type 4)

Discontinued, often available on eBay and Wetpixel.US$500,

Sync cord and Fiberoptic cable, 4AA batts

Discontinued as of July 2017 and replaced with the Z-330

Still popular, much in demand in the used strobe market, $300 and over.

Circular even beam thanks to dual flash bulbs.  Built-in focus light.

 

Features:

High power with Guide Number 24, wide 100 degrees circular beam angle  light distribution even without a diffuser

INON unique T-shape Twin Flash construction and optimally designed reflecting mirror/prism enable effective light distribution and produce powerful guide number 24 (*1) at wide circular 100_ beam coverage without a diffuser from compact body (outer diameter:99mm x depth: 100mm x height: 122mm) (*2) run by only 4 x AA batteries. Even for shooting wide subject, the Z-240 delivers strong strobe light to an entire area without using a diffuser which suppresses strobe power. Packaged -0.5 White Diffuser 2 (TTL/Manual) increases bean angle to 110 degree (guide number 21). With the white diffuser, color temperature of the Z-240 decreases at 100K (Kelvin) only to depict underwater scenery in same color regardless of using the diffuser or not.

(*1) Measurement in air/ ISO100m, Nominal value

Minimum recycle time 1.6 seconds. Minimum recycle time at full flash (how fast the strobe is ready to fire just after full flash) is approx. 1.6 sec.(*3). The Z-240 unique circuit components carries two sets of fundamental electrical parts (transformer and transistor) to achieve fast recycle time.

Optical connection/electrical connection, digital/film fully compatible

The Z-240 offers all advanced features including S-TTL Auto mode which supports TTL Auto exposure control by transmitting built-in flash light to an external strobe and compatibility with Clear Photo System. Optical connection system widely supports from transparent housing for compact digital cameras to a housing for digital SLRs with built-in flash regardless of make or model. Its sync connector accepts Nikonos 5 pin type cable to shoot in TTL Auto mode with a film camera or in Manual/External Auto mode with high end digital SLR not equipped with the built-in flash (*4).

(*4) Usable function may vary depending on camera system and connection method

EV. Controller to adjust exposure of S-TTL Auto

It is simple to fine-tune flash power in S-TTL Auto by dialing the EV Control Switch on the back control panel. Adjustable range is 3 steps to increase and 6 steps to decrease, to suit to personal preference or different exposure control characteristics among camera models.

Next generation wireless TTL

The Z-240 Type 4 successfully amplifies receiving optical signal from the slave sensor 20 times more comparing to previous Z-240 Type 3 to provide wireless S-TTL Auto mode using a mirror instead of an optical cable. Attaching optional Wireless Connection Kit on the Z-240 Type 4 and combined with a housing via Shoe Base Set or Grip Base D4 Set creates a handy S-TTL Auto shooting set.

13 step Manual / 24 step External Auto Intensity settings

The Z-240 supports professional needs for sophisticated and precise lighting by its 13 step Manual mode with 1/2EV. increments and by semi-automatic 24 step External Auto mode with 1/4EV. increments which determines strobe output based on onboard sensor. INON unique Advanced Cancel Circuit benefits you with faster recycle time and more images per battery set to eliminate drawbacks when using with a pre-flash type digital camera where the built-in flash always burst full dump.

      High-intensity 180 lumen p

Focus Light with shutter linked auto OFF function

Multifunctional Focus Light for supporting focusing as well as for using as an indicator of strobe charge status since it turns on in synch with strobe’s ready LED lamp. The Z-240 Type 4 uses high-intensity 180 lumen power LED as Focus Light which is also usable as an independent diving light producing 180 lumen/20_ coverage. The Focus Light automatically turns OFF in synch with shutter release where it quenches emitting light at the time of pre-flash under Optical D Cable Connection with a pre-flash type digital camera, so it is never recorded in an image (*5).

(*5)Focus Light may be recorded on an image depending on camera system, connection method and shooting condition.

Integral pre-flash mode detecting function

Fully compatible with a camera like Nikon digital SLR cameras D700/D300/D200/D90/D80 which alter number of pre-flash between once or twice depending on shooting condition making total flashes twice to three times. The Z-240 automatically identifies number of pre-flash to activate adequate program to support proper functioning of External Auto, Manual as well as precise S-TTL Auto mode.

Manual + TTL Auto mode for film cameras

Newly introduced flash mode for hard wired film camera to pre-set maximum flash power in TTL Auto exposure to compensate the weakness of the TTL Auto mode. Conventional TTL Auto may not get along with a particular situation like shooting a swimming fish without colorful back ground where TTL Auto could deliver full damp resulting from TTL error. The Manual + TTL Auto mode can avoid this problem by manually setting necessary flash output for a subject to stop firing at pre-set flash amount in case of TTL error happens and benefit you to drastically reduce overexposed images.

 

Specs:

(*1) Flash modes / connection method is vary depending on camera system. Also flash mode is vary depending on connection method. Please refer to respective sections of the user manuals for detail.

(*2) Measurement in air / ISO100, m, Nominal value

                     (*3) Usable for External Auto mode. At, ISO100 equivalent film sensitivity
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Inon Z-330

MSRP: US$600 to $699

Sync cord and Fiberoptic cable, 4AA batts

Features:

Guide Number 33

110 Degrees of Coverage Underwater

Robust and Durable Construction

Includes a rotatable light shade to help prevent backscatter

220 lumen focus light

Enhanced controls with large knob

Diffuser

Dome Filter 4900K can be found here. 

Dome Filter 4600K can be found here.

Dome Filter ND can be found here.

Dome Filter Soft can be found here. 

Includes        1x Strobe Light Shade

                     1x Strobe Dome Filter SOFT

                     1x Sync. Connector Cap

                     1x Slave Sensor Cap

                     1x Sensor Cap Caution Sticker

                     1x Repeated Flashes Limitation Sticker

                     1x INON Grease

                     1x Spare O-ring(Battery Box, Synch Connector)

                     2x TTL Insulation Plate

Guide Number 33 And Underwater Coverage 110-Degree Without A Diffuser. The Z-330 strobe has built-in optically designed dome lens offering both high power and wide coverage without a diffuser which can sacrifice power. 

Z-330 Front Dome Lens  The Z-330 can deliver full dump even at 1/1000 high shutter speed setting without cutting power 
The Strobe Light Shade is bundled to cut a part of strobe light to suppress ghost or flare and backscatter when the strobe is close to a lens port. 
The shade rotates 360-degrees, with clicks.
Radiation Heatsink is a circular metal heatsink of  high thermal conductivity directly connected to inner circuits to release generated heat. 
220 Lumen, Shutter-Linked Auto Off Focus Light delivers 220 lumens for focusing a subject. Shuts off cease in synch with the shutter release and automatically turns ON 
The Focus Light has a Fresnel lens in front supporting more accurate strobe aiming and improved usability. 
Phosphorescent Back Panel And Improved Intuitive Control Dials to improve visibility both during day and night dive. 
Also, control dials are enlarged for user-friendly controllability even through thick gloves during cold water diving. 
S-TTL Auto /13 Steps Manual Flash Mode INON’s unique accurate auto exposure system S-TTL has been further evolved. The accuracy of exposure is advanced providing more accurate exposure. 
In addition, optimized high-performance slave sensor never misses camera’s trigger signal even faint or partially damaged fiber optics cable can trigger the strobe to offer faultless triggering. 
Precise 1/2EV. increments 13 steps Manal flash control is onboard to support professional use. 
Wide Variety Of Dome Filters with a bayonet system to attach/remove a strobe dome filter. 
Besides bundled Strobe Dome Filter SOFT to protect dome lens surface and soften strobe light, optional Strobe Dome Filter ND which steps down at -4EV, Strobe Dome Filter 4600K which changes native color temperature to 4600K and Strobe Dome Filter 4900K which changes to 4900K will be available in 2018. 
Both Optical/Electrical Trigger are Supported. The Z-330 is equipped with Nikonos type 5 pin sync connector and a fiber optic cable socket.

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Intova PX-21 Compact Slave Camera Flash, no cable connection   $75.

Compact slave strobe with waterproof housing   
Underwater housing depth rated to 200 feet/61 meters
Universal slave strobe can be used with digital or film cameras
Beam Angle approx. 38 degree horizontal and 54 degree vertical
Power: 2 AAA Batteries
YS mount.  This looks like a toy compared to most other strobes.
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ISOTTA RED64 STROBE  ?4AA ??Fiberoptic cable,   Guide Number: f/22 in water, not yet on the market. 
5400 K, Nikon i-TTL & 10 Stop Adjustments.  
Power: 270W
Guide Number: f/22 in water
Area of Coverage: 130°
Recycle Time: 3 sec. on full
Flashes per Charge: 400 flashes on max power
Color Temp: 5400 K
Manual Power Adjustment: Nikon i-TTL/10 Stops
Flash Sockets: 1x S6
Optical Ports: Yes
Modeling Light: Whte/Red
Weight in Water: Neutral
Rechargeable Ni-MH Batteries
Slave Function
Battery Tester
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iDive SYMBIOSIS SS2R Underwater Strobe & Video Light  $599.

This complete Underwater Lighting System (patent pending) is designed by iDiveSite (previously known as iTorch) for underwater photography and videography. It offers user upgradable LED head and battery pack. It now includes a 4,000 lumens video light.  

The name Symbiosis means interaction between two different organisms living in close physical association, typically to the advantage of both. With this, video light and strobe are now in one body.  They could work at the same time or separately. Video light could be upgraded by purchasing just the LED head in order to have an up-to-date video light. Photographers can build on demand, they can purchase different kinds of modules to suit their needs.  

Symbiosis SS-2R Features

·       Easy mounting for any underwater housing. The SS-2 strobe includes both a YS mount and a 1” ball mount allowing you to mount on both flex arms and standard ball and clamp arms. Keep in mind the strobe may be too heavy for most flex arm systems, so we recommend using ball and clamp arms.

·       Universal Fiber Optic Cable Mount. The SS-2 uses the Sea & Sea style plug in fiber optic cable which is fairly universal across most housing brands.

·       Intuitive TTL Training Mode. Never worry if the strobe will match the camera flash again. The SS-2 includes a TTL Training Mode which learns the output of your camera flash and allows you quickly sync the strobe and your camera regardless of how the camera pre-flashes.

·       Long Battery Life. The SS-2 includes a high capacity battery which allows for up to 550 flashes or 100 minutes burn time with the video light on full power. When using a mix of strobe and video light the total life will be a combination of the two.

·       Quick to Recycle; never wait long for your next shot. With a recycle time of 2 seconds from full dump, the SS-2 is a fast recycling strobe 

Specifications

·       Weight 970grams (SS-1), 1025 grams (SS-2)

·       Size 95mm x 120mm x 162mm

·       Depth Rating 60 meters / 200ft

·       Strobe Recycle time SS-1 0.8 seconds / SS-2 1.6 seconds

·       Strobe Angle of coverage 90 degrees (100 degrees with diffuser)

·       Guide Number 24 (SS-1), 32 (SS-2)

·       Strobe color temp 5700 K

·       # of full power flashes with LED off: 1000 (SS-1), 550 (SS-2)

·       Video Angle of Coverage: 100 degrees

·       Video Lumen Levels: 2000 lumens

·       Video color temp: 5675K

·       Burn time: 100 minutes at max intensity

 

Included

Strobe with video light head, Lithium Ion battery pack   Smart charger

100 degree diffuser   YS-mount and 1-inch ball mount 

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NIKON SB-N10 Underwater Speedlight.

(Not clear if this strobe is still being produced.)  Compatible with all Nikon 1 digital cameras in their waterproof housings, including the J1 and J2 in the WP-N1, the J3 and S1 in the WP-N2, and the J4 and S2 in the WP-N3. It also works with the waterproof Nikon 1 AW1 camera. It features a depth rating of 328’. The flash helps restore color accuracy and vibrancy to your underwater images. It offers a guide number of 92’ at ISO 100.

 

The Speedlight connects to the housing via the optional SC-N10A Underwater Fiber-Optic Cable. Add the SR-N10A Underwater Fiber-Optic Cable Adapter for use with the Nikon 1 AW1 camera. The SB-N10 works with the AW1’s pop-up flash. You can easily select the auto TTL mode for use with the AW1 and the WP-N3, WP-N2 and WP-N1 housings, and you can also use one of the two manual flash modes with the AW1 and WP-N3. The built-in targeting lamp shows where the flash will be directed and helps your Nikon 1 autofocus on subjects in shadow before the flash fires. Add on the supplied SW-N10A Wide-Flash adapter to increase illumination coverage to 120°. The flash easily mounts on the optional SK-N10A Underwater Bracket. It is powered by 4 AA alkaline or NiMH batteries.

Depth Rating

Safe to use at a maximum depth of 328’ below the water’s surface.

Guide Number

GN of 92’ at ISO 100.

Connectivity

Connects to the housing via the optional SC-N10A Underwater Fiber-Optic Cable. Add the SR-N10A Underwater Fiber-Optic Cable Adapter for use with the Nikon 1 AW1 camera. The SB-N10 works with the AW1’s pop-up flash.

Flash Modes

You can easily select the auto TTL mode for use with the AW1 and the WP-N3, WP-N2 and WP-N1 housings, and you can also use one of the two manual flash modes with the AW1 and WP-N3.

Targeting Lamp

The built-in targeting lamp shows where the flash will be directed and helps your Nikon 1 autofocus on subjects in shadow before the flash fires.

Wide-Flash Adapter

Add on the supplied SW-N10A Wide-Flash adapter to increase vertical and horizontal illumination coverage to 120°.

Mounting

Easily mounts on the optional SK-N10A Underwater Bracket.

Power Source

Four AA alkaline or NiMH batteries.

Compatibility

All Nikon 1 digital cameras in their waterproof housings, including the J1 and J2 in the WP-N1, the J3 and S1 in the WP-N2, and the J4 and S2 in the WP-N3. Also compatible with the waterproof Nikon 1 AW1 waterproof camera.

(ed note:  this Nikon is said to be a close cousin of the Sea&Sea YS-D1 strobe)

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OlympusUFL-3 Underwater Strobe.

 

Amazingly compact and so light you’ll barely notice it, the new UFL-3 underwater flash is a serious tool for serious divers. Waterproof to an incredible 246 feet (75 meters), this adaptable flash is specifically designed to work seamlessly with a number of Olympus camera/underwater housing combinations. $499.

·       TTL underwater flash function

·       Simple handling above and under water

·       Exposure control: Manual and TTL settings available

·       RC modes

·       Slave mode

·       Light temperature: 5400K

·       Guide Number: 22

·       2 second recharge time

Box contents: UFL-3, Diffuser (UFLDP-4), instructions, warranty, o-ring, silicone grease, and YS bolt.

Power Supply: AA alkaline batteries / AA NiMH batteries / AA lithium batteries / AA oxyride batteries (4 required)

Item Number: V6320120U000

Flash Accessories compatible with UFL-3 (available for purchase separately):

·   PTCB-E02 UW FIBER CABLE

·   UNDERWATER LONG ARM PTSA-03(W)

·   UNDERWATER SHORT ARM PTSA-02

·       PTBKS-E02 ADAPTER 

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ONEUW  2 models  160X Underwater Digital Strobe for Nikon Cameras, and 160X Underwater Digital Strobe for Canon Cameras. $1,700. ea. S6 sync cable socket and sTTL fiberoptic cable. Two internal CPU’s, one for the TTL and strobe management, another for power management.  160x Spare Battery Pack $175.  

No Specifications provided, the strobe sounds impressive, but data is needed.

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RETRA STROBES:  Version 1 of the two Retra strobes is discontinued. Version 2 release late in 2019. Sold directly by Retra with one year warranty.

Retra Version 1.0, Flash Prime $731, Flash Pro $915.  Fiberoptic cable. Both V1 strobes are obsolete.

Table from Retra: //www.retra-uwt.com/pages/retra-flash

 

 

                                               Comparison of the Retra with some popular makes of strobes

Table by Alex Mustard: https://www.retra-uwt.com/pages/flashgun-light-comparison

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SEA&SEA STROBES

Three models are available: The YS-01 and YS-03 compacts and YS-D2J standard size, plus two good discontinued models, the YS D100a and YS-D250; the other models are obsolete.

SEA&SEA YS-01 Strobe  $430  

Features a circular beam angle of 100 degrees x 100 degrees and a guide number of up to 20. The YS-01 is a new compact-type slave strobe that can be used for all applications from wide-angle to macro photography. 

You can switch between DS-TTL (Digital Slave TTL) and a ten-level manual control function, to enable fine adjustment of the light level. You can also set up a lighting system that uses two strobes in DS-TTL mode. Power comes from four AA batteries for a powerful and long-lasting strobe. You can enjoy taking pictures all day long without having to recharge the batteries. The recycle time takes 1.9 seconds with nickel-metal hydride batteries (2700 mAh) for stress-free continuous shooting. Fiberoptic cable.

The YS-01 is furnished with a high-luminance white LED target light (1W) indicating the optical axis of the strobe attached to its front face that is effective for night diving. You can fully exercise your creativity with the YS-01, which can be used as a primary strobe or secondary strobe in a wide range of applications, from compact digital cameras to digital SLR cameras.

Specifications
Guide Number -- (ISO 100/m) (land)] 20
Beam Angle -- 100 degrees x 100 degrees
Batteries -- 4 x AA A: 6V Ni-MH: 4.8V
Number of Flashes—A: 230 Ni-MH: 330
Recycle time (full) -- A: 2.5 sec. Ni-MH: 1.9 sec.
Color temperature – 5600
Color temperature w/diffuser -- 5250K
Depth rating -- 75m / 250ft
Dimensions (WxHxD) -- 68x108x129mm / 2.7x4.3x5.2inch
Weight -- 505g / 17.7oz
Underwater weight -- -10g / -0.4oz
Auto power OFF function
Fiber-Optic Cable (L-type)
Over-pressure relief valve
Slave function
Exposure control: DS-TTL, TTL, Light level control dial (GN): 1 / 1.4 / 2 / 2.8 / 4 / 5.6 / 8 / 11 / 16 / 20 (10 steps)
Pre-flash control: Equipped with pre-flash cancel mode
DS-TTL function
LED target light
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SEA&SEA YS-03 Strobe $300  fiberoptic $300 
Specifications: The same as for the YS-01 above
Others specific to the YS-03:
Exposure control: Slave TTL
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Sea & Sea YS-D2J Underwater DS-TTL Strobe
Updated version of the YS-D2 – Made in Japan. Flash Tube Overheating has been fixed.  US$600 to $690. Has replaced the YS-D1 as the most popular UW strobe for DSLR users. Excellent night-time visibility. The illuminated control panel is ideal for night diving. 
The color of the panel illumination changes to indicate mode: aqua blue (in DS-TTL mode), blue (in slave TTL mode), orange (in manual pre-flash mode) and Green (in manual mode without pre-flash). You can check which mode the strobe is set even under pitch-black conditions. 
The maximum guide number is a powerful 32 (ISO 100, meter). Recycle time is only 1.5 sec

The YS-D2 is powerful enough to illuminate a wide area, even under very bright conditions with plenty of natural sunlight. During macro photography, where subtle exposure control is required, manual mode can easily be selected and the guide number quickly adjusted as low as 1.

DS-TTL ll automatic exposure control with improved accuracy and stability. 
SEA&SEA’s own automatic exposure control system, DS-TTL ll, has been further improved. Tuning light emitting timing in detail and adding light emission detection function, the accuracy of automatic TTL exposure has been noticeably improved. Previously, TTL photography was difficult with the lens’s aperture wide-open (maximum aperture) and images were likely to be overexposed. It is now possible to give a low powered flash so the correct exposure can be easily achieved with the YS-D2.

EV control function can finely tune the amount of light emitted. By controlling the actual flash light level, the strobe achieves accurate exposure compensation with EV compensation. As the exposure compensation range has improved to +/- 2.0 EV, users can concentrate on shooting even more creative images. (-2,0EV, -1.5EV, -1EV, -0.7EV, -0.3EV, +0.3EV, +0.7EV, +1EV, +1.5EV, +2.0EV).

Two diffusers and red filters included with the strobe as standard. By attaching one of the included diffusers, the beam angle is increased to 100° or 120° (circular) with a soft and even light. The red target light filter helps avoid disturbing skittish creatures that are likely to react to normal light. The red filter is fitted inside the diffusers.

The target light can be adjusted in 2 steps. The strobe is equipped with a target light (approximately 100/300 lumen). In use (target light switch in ON position), the light will be automatically turn off when the strobe fires and will automatically turn back ON after 0.5 sec.

Handling is greatly improved. Larger knobs and a new magnetic rotary switch help prevent controls being accidentally reset in use. With the new controls, quick operation is possible when photo opportunities suddenly appear. Custom mode is a new innovation which allows the YS-D2 to be compatible with cameras with non-standard pre-flash settings. The YS-D2 can be set to be compatible with cameras with non-standard pre-flash in DS-TTLII and manual modes.

Specifications

                                 Guide Number (ISO 100/m) (land): 32   24 (with Diffuser 100 attached) 20 (with Diffuser 120 attached)

                                 Beam Angle:  80° x 80° (without Diffuser)  100° x 100°(Diffuser 100) 120° x 120° (Diffuser 120)

                                 Batteries: 4xAA A: 6V Ni-MH: 4.8V

                                 Number of Flashes: A: 150 Ni-MH: 200

                                 Recycle time (full): A: 3.0 sec. Ni-MH: 1.5 sec.

                                 Color temperature: 5600K

                                 Color temperature w/diffuser: 5250K

                                 Depth rating: 100m / 330ft

                                 Dimensions (WxHxD): 89x133x116mm / 3.5 x 5.2 x 4.6 inches

                                 Weight : 623g / 22.0oz

                                 Underwater weight: Approx.+40g / 1.4oz

                              Exposure control:  DS-TTL II, Slave TTL, Light level control dial (GN): 1 / 1.4 / 2 / 2.8 /4 / 5.6 /8 / 11 / 16 / 22 / 32 (11 steps)

                                 Pre-flash control: Equipped with pre-flash cancel mode

                              Sync cord: 5-pin Sync cord/N or Fiber-Optic Cable

                                 Over-pressure relief valve in case of battery flooding

                                                        LED target light (output is adjustable in 2 steps)

                                                        Audible charge signal

                                 Accessories:

                                                        1-inch Ball Mount Strobe Adaptor

                                                        Diffuser 100°

                                                        Diffuser 120°

                                                        Red filter x2

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SEA&SEA DISCONTINUED strobes:  YS-D1, YS-D2, YS-02, YS-17, YS-110a, YS30, YS50, YS60, YS90,YS110, YS120, YS250. Repairs no longer available.

 

Sea&Sea YS-110a - Discontinued.  eBay at time lists for abut $110, has 3 flash tubes in a circle, each powered by its own capacitor.  4 AA batteries, fiberoptic and sync cord. Considered a good buy.

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Sea & Sea YS-250Pro high intensity strobe, discontinued. Proprietary battery, electric sync cord, ?no fiber optic cable.  eBay about $200. Considered a good buy.

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SEACAM  STROBES:

Seaflash 60DTTL $1,950
Seaflash 100DTTL $2371
Seaflash 150DTTL $2,933
Seaflash 1500TTL $3,307
Seaflash 60DTTL

Guide Number 24

Beam angle 130 degrees

Batteries AA x 4

Flashes at full power 200

Recycle Time 2 sec

Color Temp with Diffuser 4400K

 

Depth Rating 80 m.

Dimensions 75 x 150 mm / 3 x 5.9 in

Weight 550 gm in air,

Neutral buoyancy underwater

 

Manual and TTL auto settings

Focus Light Yes

Ball Mount included

 

Other Features  : 

180 lumen focus light

CANON e-TTL / NIKON i-TTL / S-TTL, Dual-TTL, Film TTLand manual power adjustment in 5 steps and +/– lightning correction.

Power 60 Ws / 4400 K°, uw-guide no. 8 at 100 ISO / 1 m full power.

Illumination 130°

200 fl ashes with max. power, delay time 0.1 –2 sec.

Flash socket N5 or S6 – and connection for fi ber optical cable / Helicoil M8 thread for fl ash arm attachment.

Dimensions (L x Ø) : 150 x 75 (80)mm

Weight: 550 g, neutral under water

Operation depth: - 80m

 = =

SEAFROGS ST100Pro Underwater Strobe, about $ 352

Guide Number 32

100°x100º Angle of Coverage without Diffuser

Robust & Durable Construction Against Heat

800 lumen Target Light

.

KEY FEATURES

Powerful G.N. 32 and UNDERWATER coverage 100x100 degree

Long flash duration and reaches to FULL power after start flashing in significantly short period of time.

Together with flashing system in sync with pre-flash and main flash of camera’s built-in flash, the ST-100-Pro can deliver full dump even at 1/1000 high shutter speed setting without cutting power

800 lumen, Shutter-linked AUTO OFF Focus Light

The built-in Shutter-linked Auto-Off Focus Light delivers 800 lm brightness to support when focusing a subject and cease in synch with the shutter release and automatically turns ON again.

To aim optical axis of the Focus Light in line with strobe light’s optical axis, the Focus Light has a fresnel lens in front supporting more accurate strobe aiming and improved usability.

S-TTL Auto /11 Steps Manual Flash Mode

A unique accurate auto exposure system S-TTL has been further evolved. Accuracy of exposure is advanced providing more accurate exposure.

In addition, optimized high performance slave sensor never miss camera’s trigger signal even faint or partially damaged fiber optics cable can trigger the strobe to offer faultless triggering.

Precised 1/2EV. increments 13 steps Manal flash control is onboard to support professional use.

 

Both Optical/Electrical Trigger Supported

The ST-100-Pro is equipped with a 5 pin sync connector as well as slave sensor to trigger optically to adopt wide variety of camera system.

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SEALIFE, two models SL96101 Digital Pro Flash $ 230, Sea Dragon SL963 $349. 4AA batts. Auto Mode setting adjusts flash brightness for optimal image exposure. Depth rated to 200 ft/ 60 m.

Variable power adjustment allows user to manually fine tune flash brightness for desired effect and image exposure.

5 pre-flash cancellation settings

Effective underwater distance range from 2 to 8 ft. (0.6 to 2.5 m).

Approximately 100 flashes with 4 AA batteries (not included).

Flexible, rubberized arm for easy aiming and sure grip.

Includes flash link optical cable connection (SL962).

Deluxe carry case included.  Works w/all brands of cameras that have up to 4 pre-flashes, auto mode automatically adjusts flash brightness for optimal image exposure.

Flash Guide Number: 20/65 (meters/feet distance on land) at Full Power, 1.5m/16.4 (meters/feet distance on land) at Low Power   Power Adjustment Range: 8% to 100% (In Auto or Manual Modes)

Magnetic Power Switch: On, Off and Test Functions

Coverage Angle:

60° Horizontal x 50° Vertical (w/o Diffuser)

86° Horizontal x 70° Vertical (w/SL9618 Diffuser)

Color Temperature: 5700° Kelvin

Recycle Times:

Instant when Power Setting Less than ½

7 Seconds at Full Power (fresh batteries)

Watt Seconds: 40 Watts

Buoyancy: Positive

Construction:

Body; Rubber Armored Polycarbonate

Hardware; 316-Stainless Steel

Seals; Silicone O-rings and Gaskets

No Lubrication Required

Weight: 21.5 oz. (612 g) w/o Batteries

Dimensions (Dia. x Depth): 6.4” x 3.5” (16.3 cm x 8.8 cm)

Universal Optical Cable Plug for Olympus, Nauticam and Other Brands

Owner’s Manual 

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ULTRAMAX ULTRAPOWER UXDS-1 Digital Underwater Strobe Head $ 160. 

The ULTRAPOWER UXDS-1 Digital Underwater Strobe Head from ULTRAMAX is a flash with a depth rating of 180’. It offers a guide number of 65.6’ at ISO 100 (on land), a power rating of approximately 25 Watt-sec, a coverage angle of 60°, and a daylight-balanced color temperature of 5700K. There are 5 pre-flash settings to synchronize with the built-in flash of most digital compact cameras. Choose from power/brightness output levels of 10%, 25%, 50%, and 100%. The strobe also has slave functionality, allowing it to be triggered by the firing of another flash. Color-coded LED indicators tell you the selected pre-flash and flash output modes. The UXDS-1 runs on 4 AA batteries, which are available separately and are housed in a compartment that’s completely isolated from the electronics in order to prevent water damage to the strobe if the compartment is accidentally opened or batteries are changed when the unit is still wet from a dive. Additionally, the strobe has a durable housing made of corrosion-resistant polycarbonate.

Depth Rating

Safe to use at a maximum depth of 180’. The housing is secured via double O-ring seal, and the battery compartment is completely isolated from the electronics to prevent water damage if it’s accidentally opened or batteries are changed when unit is still wet from a dive.

Guide Number

65.6’ at ISO 100 (on land)

Power Rating

Approximately 25 Watt-sec

Coverage

Offers a coverage angle of 60°.

Color Temperature

Daylight-balanced at 5700K.

Modes

There are 5 pre-flash settings to synchronize with the built-in flash of most digital compact cameras. Additionally, there are 4 output levels: 10%, 25%, 50%, and 100%. The strobe also has a flash test button. Benefit from manual exposure control.

Flash Triggering

Twin slave sensors allow strobe to be triggered wirelessly by another flash, such as the camera’s built-in one. When either sensor detects light from a flash, the strobe fires instantly. You can also purchase an optional fiber-optic connector and cable for triggering.

Color-Coded LED Indicators

Tell you the selected pre-flash and flash output modes. A blinking LED indicates low power.
Runs on 4 AA batteries, which are available separately, and features a magnetic on/off switch.
Housed in a durable case made from corrosion-resistant polycarbonate.
Optional UXFA-1 9.5” Flex Arm with Foam Grip and UXST-1 Strobe Tray are available, giving you a mounting point for the strobe and a camera, and also providing improved handling.

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ULTRAMAX UXDS-3-HED 

The ULTRAPOWER UXDS-3 Digital Underwater Strobe Head $ 200, is a flash with a depth rating of 197’. It offers a guide number of 66’ at ISO 100 on land, as well as a power rating of approximately 25 watt-sec. It also has a coverage angle of 90° and a daylight-balanced color temperature of 5700K. There are 5 pre-flash settings to synchronize with the built-in flash of most digital compact cameras. Choose from power/brightness output levels from 20-100%. The strobe offers manual exposure control and has slave functionality, allowing it to be triggered by the firing of another flash.

 

LEDs indicate power level, low battery, and whether or not the flash is ready. The UXDS-3 runs on 4 AA alkaline or NiMH batteries, which are available separately and are housed in a compartment that’s completely isolated from the electronics in order to prevent water damage to the strobe if the compartment is accidentally opened or batteries are changed when the unit is still wet from a dive. Additionally, the strobe has a durable housing made of corrosion-resistant polycarbonate. The supplied diffuser widens the UXDS-3’s angle of coverage to 100° and softens its light to prevent backscatter, glare, and hard shadows. The strobe head is equipped with a standard YS connector for mounting onto an optional lighting arm.

Waterproofing

Safe to use at a maximum depth of 197’. The battery compartment cap is secured via double o-ring seal as is the main body of the housing which also has a gasket as an enhanced barrier against water penetration. To eliminate possible leakage through the housing, Ultramax has used a simple reed switch controlled by a powerful external magnet. The battery compartment is completely isolated from the electronics in order to prevent water damage to the strobe if the compartment is accidentally opened or batteries are changed when the unit is still wet from a dive.

Guide Number

Features a GN of 66’ at ISO 100 on land.

Power Rating

Features a power rating of approximately 25 watt-sec.

Coverage

Offers a coverage angle of 90°, which is 50% wider than Ultramax’s previous model and can be increased to 100° using the supplied diffuser. The diffuser also softens the light to prevent backscatter, glare, and hard shadows.

Color Temperature

Daylight-balanced at 5700K.

Modes and Triggering
Offers manual exposure control. There are 5 pre-flash settings to synchronize with the built-in flash of most digital compact cameras. Choose from 5 power/brightness output levels ranging from 20-100%. The strobe also has slave functionality, allowing it to be triggered by the firing of another flash. An optional Fiber Optic Cable Kit (#UXDS-FOC) is also available.

LED Indicators
There are five LEDs that indicate power level, along with a green LED power ready light featuring a blinking function that indicates low battery.

Power: Runs on 4 AA alkaline or NiMH batteries, which are available separately.
Durable housing made of corrosion-resistant polycarbonate.
Standard YS connector
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Weefine Ring Torch
Novel product in the submarine sector, circular lighting for 67mm front casings.
With 3,000 lumens of real power in the color White.
You can select the mode of use between four levels of intensity so you can choose the most suitable for your needs (3 intensities in red light and blue light.
Compact and ergonomic design submersible up to 100 meters.
You just need to screw our focus on the termination of your 67mm shell so you can enjoy a homogeneous light beam that is perfect for any macro shot you might want to capture.
If you connect it to your camera through a fiber cable, this focus is capable of acting in flash mode, a unique feature within this sector.
The 67mm Ring Focus has white light, red light and blue light to delight the most demanding photographers.

Characteristics:
Annular focus with 3000 lumens.
67mm connection.
Uses a 26650 battery of 5000mAh, included.
Weight with battery: 480 grams.
It can be used as a flash thanks to its Sea & Sea type connector (fiber cable not included).
4 powers of use in white light, 100%, 75%, 50% and 25%. 3 powers of use in blue and red light, 100%, 50% and 25%. 50 minutes at maximum power.
3 AAA batteries..

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END.

 

 

Backscatter has added a mini strobe:

The Backscatter Mini Flash Underwater Strobe, model MF-1,  for $400 plus battery. A dedicated snoot is available.

 

For an excellent review of the Backscatter Mini Flash UW Strobe, please see: 
"Backscatter Mini Flash MF-1 and Optical Snoot OS-1 By Phil Rudin" in UnderWater Photography, 
issue 112/44-48, Jan-Feb 2020. 
http://www.uwpmag.com/?download=112

 

 

(abstracted from https://www.uwphotographyguide.com/kraken-kr-s02-review?utm_source=Underwater+Photography+Guide+Newsletter&utm_campaign=09fcbc2056-UWPG_NEWSLETTER_2018_07_31_COPY_01&utm_medium=email&utm_term=0_47636bb2bb-09fcbc2056-265771361. Please see it for the full review.)

 

"Kraken KR-S02 Strobe Review 
By Nirupam Nigam