Walt Stearns

As I have listed earlier, the 21700 Li-Ion rechargeable batteries that I am using for my two new Retra Maxi Strobes is comprised of six 3.6V model Nitecores. Four consist of the NL2160HP models which boasts a capacity of 6000mAh at 21.6Wh, whereas the 2 Nitecore NL2153 models feature 5300mAh with a 19.08 Wh rating. In addition to them, the 21700’s provided with both my Dive Rite CX2 light and Kraken Sports Hydra 1800+WSR focus light are also 3.6V 5000mAh models with 18Wh rating. All feature a continuous 20A to 25A discharge current specifically designed for high-drain devices like powerful flashlights and flash systems. Based on that and what others like Chris Ross, Dave Hicks, and Backscatter have sited to use with Backscatter HF-1 and Retra’s Maxi pretty much boils down to 20A 3.6V 5000mAh model 21700 with 18Wh rating. The only question from there is why would you want or need with 21700 with a lower amperage for a HF-1?

My collection of 21700 Li-Ion rechargeable batteries I am using for my two new Retra Maxi Strobes is comprised of six 3.6V model Nitecores. Four consist of the NL2160HP models which boasts a capacity of 6000mAh at 21.6Wh, whereas the 2 Nitecore NL2153 models feature 5300mAh with a 19.08 Wh rating. All feature a continuous 20A discharge current specifically designed for high-drain devices like powerful flashlights and flash systems.

That is very true TimG, provided you have the right credit score and willingness/funds to handle the membership fees. Most of my CC are made of metal, aluminum mostly, but not titanium. My income is not high enough to afford one yet.

Oh, the excess, excess baggage fees. I can detect the smell of a melting credit card all the way here.

Sea & Sea 77mm Internal Correction Lens has been Sold.

Dropping the price to $700.

The Retra Pro Max strobes have been purchased by John Melendez in WA. I still have the one Prime available.

This is a matched pair of Retra Pro Max I (not the Pro Max II models) underwater flash units with Booster Extended Battery Packs. The first-generation Pro Max models pack 140Ws of power providing fantastic lighting for both wide angle and macro photography. The feature that makes the Pro Max series a top-tier underwater flash, is Retra’s famed circler flash tube, redesigned battery compartment and backlit LCD display that shows you all the necessary information in one spot. The battery compartment allows the use of 4 AA Batteries with the standard battery door or double the number AA batteries from 4 to 8 via Retra’s Battery Booster. The Booster is a single piece battery door that allows 4 additional AA batteries to be placed internally in the flash to double the shooting the duration of the Flash unit. Among the list features – TTL and High-Speed Sync (HSS), the Pro Max include a built-in water leakage detection in the battery compartment. Like all Retra flashes, the Pro Max features Fiber Optic Connection and accepts all Retra series Reduction Rings / Beam restrictors and Wide-Angle Diffusers as well as Retra’s Light Shaping Devices with the Retra mount. Each Strobe comes with the Following: 1” Mounting ball 4 Spare O-rings for the battery compartment 2 Tube of Retra silicone grease 24 Eneloop Pro AA 2600mAh 1.2V Nickel Metal Hydride (NiMH) Batteries 2 HiQuick battery chargee for 8 AA rechargeable batteries In addition to their great cosmetic appearance (see photos) both Pro Max strobes work in perfect order. Total Trigger Count on Retra Pro Max (Serial # T4B3) via the Retra App is 16,085 firings with Retra Pro Max (Serial # 4ETV) coming in at 15,751 total firings. Firmware on both strobes have been updated to the latest 2.2 firmware. Brand new, Retra Pro Max (SKU: # rt-flash-pro-max with SKU: # rt-booster) retailed $1800 each. My Selling price $2200 for the pair.

Selling a second-generation model Retra Prime underwater flash (Serial # XCC5) that is in near as new condition as gets with a Trigger Count of only 252 firings. Firmware has been updated to the latest 4.5 addition. The Prime is Retra’s underwater flash featuring a complete, unbroken circular flash tube generating a full 130-degree beam spread without the aid of a detachable diffuser. The quality and consistency of the light for shooting wide-angle is ideal adding color temperature in the 4900° Kelvin range rendered a warmer white to the lighter color regions on subjects like sharks. With a set of fully charged AA 2600mAh 1.2V Nickel Metal Hydride (NiMH) batteries, the Prime has a max output of 100-Watt seconds (Ws) at full power with a recycle time of 2 seconds for up 200 flashes. Like all Retra flashes, the Prime features Fiber Optic Connection and accepts all Retra series Reduction Rings / Beam restrictors and Wide-Angle Diffusers as well as Retra’s Light Shaping Devices with the Retra mount. Strobe comes with the Following: 1 inch Mounting ball 6 spare O-rings for the battery compartment 8 Eneloop Pro AA 2600mAh 1.2V Nickel Metal Hydride (NiMH) Batteries 1 Powerex MH-C980 Turbo Charger-Analyzer for 8 AA rechargeable batteries Selling price $800 USD.

Sorry folks, but I have decided that I would rather keep it. The Howshot 140mm / 5.5-inch optical glass dome port and Sigma 15mm f/2.8 EX DG Fish-Eye Lens with a Canon EF Lens to Nikon Z Camera Autofocus Adapter and Kenko HD Pro 1.4 DGX Teleconverter is no longer for For Sale.

Nikon Nikkor AF-S 60mm f2.8 G ED Micro Lens and Nikon FTZ II Mount Adapter combo has been Sold.

I am dropping the package price for the Dome port (value of $700) and lens setup to $875 with free shipping in the US. You will need to PM me to discuss shipping options for outside the US.

The Nauticam N120 Macro port 60 has been sold. I still have the Nikon Nikkor AF-S 60mm f2.8 G ED Micro Lens and Nikon FTZ II Mount Adapter combo for sale for $350. Both are in superb condition with no signs of wear on the body, glass is totally clean. If you are looking for a macro lens in the 50-60mm range for your Nikon Mirrorless rig, this combo is still the best going.

I have a Sea & Sea 77mm Internal Correction Lens designed to correct image aberration and distortion caused on wide angle lenses shooting behind a dome port. The lens 77mm size allows direct attachment to any lens with the same filter thread size. Below is a list if wide-angle lenses that I know of with a 77mm filter thread size that this Sea & Sea Internal Correction Lens can definitely cover: Canon EF 16-35mm F/4L USM Canon EF 17-40mm F/4L USM Canon RF 14-35mm f/4 L IS USM Lens Nikon AF-S 16-35mm F/4G ED VR Nikon AF-S 18-35mm F/3.5-4.5G ED Nikon AF-S NIKKOR 20mm f/1.8G ED Lens Nikon NIKKOR Z 20mm f/1.8 S Lens Rokinon 20mm f/1.8 ED AS UMC Lens (Both Canon EF and Nikon F) Venus Optics Laowa 10mm f/2.8 Zero-D FF Autofocus Lens (Both Nikon Z and Sony E) Viltrox AF 16mm f/1.8 Lens (Both Nikon Z and Sony E) ZEISS Milvus 18mm f/2.8 ZE Lens (Both Canon EF and Nikon F) Condition: Like new with no scratches, marks or stains. Comes with the following: 85mm protective filter cap. Sensei PRO 67-77mm Brass Step-Up Ring should you want to try it on a wide-angle lens with a 67mm filter thread mount. Protective case for both Sea & Sea 77mm Internal Correction Lens and Sensei PRO 67-77mm Brass Step-Up Ring. Selling price $300 – includes free shipping in the US. You will need to PM me to discuss shipping options. Items located in Palm Beach Florida.

Dropping the price down to $675 US