Nemrod

They look like rebranded Marelux housings?

That should be a good set up. The Atom strobes might be overkill for a TG but they should work fine since they do have the RC control and they would be plenty of power for any system you move up to for all but this most demanding wide angle stuff, maybe even then. I have been studying these, they do not have a standard mimic type TTL thus will not work in TTL with either my Sony or Canon, but I shoot mostly manual anyways and the size, power and price are good. I am just worried about reliability being new on the market.

My several dive buddies who shoot with the TG find the RC useful (Backscatter MF-2) and from my observing their photos I think they are getting very good results. What I am not sure about is that the results are really any better than with standard mimic TTL. But they like it and are sold on it. And best I can tell the Echo strobes do support the RC-TTL. One of my regular buddies uses a Backscatter MF-2 in RC mode to slave an older YS-D2 non RC strobe. And it works! His rig is not shielded so the YS strobe fires on mine backlighting my subject, at times useful, other times (most times) quite annoying 😁. This wide angle photo (of me) taken with the Ikelite Echo strobes, Ikelite housed R100, TTL (D.Haas), clearly they suffice!

The Inon S220 strobes (75w/s, GN22) are considerably stronger than the Ikelite Echo strobes (50 w/s, GN15). However, the Echos will support the Olympus RC for TTL control and several of my dive buddies use the RC control to their advantage with the YS-D3 Duo, even stronger (GN33?) and the TG cameras. I have a set of the Inon S220 strobes and I can see that they are stronger than the Ikelite DS50 (now Echo with the added optical functions) and nearly as strong as the YS-D3 with the diffuser installed. And they are reliable and cost effective, so RC be darned, I would go with the S220 strobes. I pair mine with a NA-6400 and a NA-R50 systems. The Echos are good little strobes and while I know I just said I prefer the S220, if RC is an important function to the OP and if they are for certain verified functional with the TG RC then I can see that be a good combo. I think two of them would pair well with a TG, especially for macro and fish pics.

Just a couple of months ago I forgot to put the cap on and went in the water. Got to about 30 feet and realized my error, NA-R50 housing. Fortunately I did not flood. However, salt crystals formed despite my effort to wash it out. Two days later I had a problem pulling vacuum. The green light would come on but I would quickly get the flashing red light while I was at breakfast. I thought perhaps some salt crystals or debris had formed on the internal seal surface. I pulled a vacuum as best I could and quickly put distilled water in the cavity and pressed the release button several times. I repeated several times. I had placed a microfiber cloth inside to ensure no water got anywhere inside the housing. I completed the trip and have had no further issues and just recently did a pool dive, all functioned normally. If I could stay home long enough I would like to take it apart. Too expensive to replace but if I cannot then I guess off to Reef Photo it goes. YRMV. Edit to add, I forgot, after forcing the distilled water flush through the valve I used an air gun to gently dry it including pressing the release while allowing air to flow through it. It functioned the remainder of dives and is still seemingly fine. I too would like to know how to disassemble the valve.

Steady red light is a low battery. If a fresh battery does not cure the problem something is possibly amiss with the circuit. Pull a vacuum and let it sit over night. Then release the vacuum, do you hear the valve equalizing? If so there is probably not a leak. If no vacuum, then I guess there is a leak. Change port and door O-rings perhaps, inspect the sealing surfaces.

Please, no. I hve not entered a contest ever but I apprecite looking at the photos you folks put up and the skill and luck and chance and dedication. AI will ruin photography because real photographs can never be perfect. I understand using some tools to get white balance, remove backscatter perhaps but at what point is it no longer your photo but something else.

With the Canon 18-45 lens you will want the WWL-1 not the WWL-1C if getting the full 130 degree FOV is important. The WWL-1C will only get about 116 degrees with a base 18mm APS-C lens. The WWL-1 was designed for 28mm equivalent lenses and the WWL-1C was intended for 24mm equivalent lenses. The WWL-1 does have a lanyard attach point. The WWL-1 and I imagine the WWL-1C are too large to use the flip adapters. Alignment is critical to prevent vignetting. I do not consider it practical to switch out between the CMC lenses and the WWL underwater. Simply too large and heavy and expensive. You can quickly switch out on the boat and go from one to the other. I do have a bayonet slot on my rigs to temporarily park the WWL for flat port work but no way I would leave that expensive and fragile piece of kit anywhere for long but on my port.

Well, okay, none of us are expert on this strobe. Per Backscatter it is smaller than the HF-1 considerably and has a UW GN28 which is equivalent to the HF-1 at max power until you set the +1 or +2 settings which I think are GN34 and GN40 respectively. Per Backscatter and the strobe operator manuals, the Backscatter MF-1/2/3, Atom and HF-1 will only shoot TTL with the Backscatter trigger. If this is not true, explain how this is not the case because I might like to purchase a set but I want to run off my UWT board or the pop up strobe for TTL. Manual of course is no issue with the UWT trigger or the pop up flash but TTL?

Yes, that is the problem. I would wish for "classic" or what I am calling mimic TTL mode for the Atom flash that will sync with either the pop up flash or the UWT trigger board when set for TTL operation without a proprietary board that will not work with many existing cameras and housings.

The trend these days seems to be to market strobes that require a proprietary TTL trigger. The Backscatter strobes do not have a simple mimic TTL mode. And reading the manual for it and the HF-1 the Backscatter trigger is required for TTL? My three camera rigs run from the pop up strobe or from a UW Technics board. So the Atom would be manual only I assume though I think the HSS mode would work from the UWT board?

Just returned. I think Roatan no different, no better, no worse, from the rest of the Caribbean basin at large. Everything has suffered from the scd, bleaching and overly warm water. Notice all the floaty stuff generating backscatter, supposedly not typical? Lots of rays and turtles, good number of fish, corals typical. (Nauticam Canon NA-R50, WWL-1, dual Marelux Apollo strobes)

I have been to Cozumel many times including just this past July, twice the year before and usually at least once annually. Over the last trips I have been asked how many cameras I have and I answered one. Now, to be complete, I have not gotten the red button on my last trips. This is flying into Cozumel. If you do the bag drag from Cancun, who knows. Cozumel, you should be okay with one camera. Put the camera in the housing. Tools, yes, my Nauticam Allen keys were taken from the carry-on camera case. Despite having carried them through multiple times.

I love my two S220 strobes. I had been using D2000 strobes until they went TU. The S220 is much stronger and nearly as strong as a pair of Z240s I had borrowed and they do throw a wide beam. The thing I run into is flash fill against a sun lit background (sun balls, shallow water, bright sand) is that I run out of sync speed on my Sony (1/160 though I can get it to 1/200 with the UWT trigger). Thus needing to use the aperture/ISO to help control the background exposure and the little S220 (D2000, Z240 et al) quickly run out of power. Yes, going to a lower ISO and aperture works until I run out of strobe power. Just playing in the pool, what needs f5.6 with the S220 (GN22) I can do at f8 with the Marelux Apollo (GN33) and just a wild guess maybe with something like the HF-1 (GN40) at f11? I am not putting this photo up as an example of great photography ;), but here two S220 strobes did allow me to get a decent exposure of the turtle at the Salt Pier against a bright background, WWL-1, S220 strobes with warming diffusers, NA-6400, f8, 1/200, ISO 200.

It is true the S220 is much stronger than the S2000 series strobes. Maybe even encroaching on the old Z240. But I think you might be asking too much of them. Can you make do, well, maybe. Not ideal, I have used mine for wide angle and CFWA, but whale sharks in shallow, brightly lit ambient conditions will be over powering for them is my bet.