Pavel Kolpakov

This manual trigger is Nauticam original product. Better contact Nauticam by e-mail for the details. But of course, if the deinstalled board on the table empties batteries in 1 day by itself, it is a defected board, change it via the dealer.

Hi Chris, Yes, if TTL protocol works via HotShoe, camera has possibility for automatic limitation 1/250. This case, If user sets camera menu "Sync Speed" to 1/250 (without "FP"), camera means mono flash type only, and also sends this info to TTL Converter, and it processes this command too. Don't forget that TTL Converter rotary switch must be set at any position 1,2,3,4,5,6,8,9, which are purposed for classic underwater strobes (Inon, Sea&Sea, Ikelite, Subtronic etc.), TTL Converter confirms that such strobe model uses a mono flash type only, it means sync speed must be limited 1/250. Camera limits shutter speed 1/250 this case automatically, casual TTL mono flash works. But if user set TTL board rotary switch to position "7", it means "Retra Pro" strobe usage, there will be available also FP (HSS) high shutter speeds. This case shutter speeds are available up to 1/8000 (using 30 khz pulsation FP (HSS) flash type). Flash control system goes from mono flash type (at speeds up to 1/250) to FP flash type (speeds 1/250 ....1/8000) automatically when necessary. Another words, when FP flash type is necessary according the camera opinion, it sets automatically mono or HSS flash type in system. This feature is purposed for Retra strobes usage.

Factory preinstalled is just a manual trigger board. It does not have a communication with camera. It fires when camera shorts X and GND contacts, nothing more. If you need a communication protocol via HotShoe, speed limiting etc, you have to change it to TTL board (on the same mount holes).

Hi Mikkel. Yes, UW Technics TTL-Converter #11052-HSS (for Hugyfot and Nauticam) fully performs Canon camera menu for flash, including HSS operation. Retra HSS functionality is included in firmware, it was developed in cooperation and with the support of Retra team.

First of all, i would compare YS-D3 profile to existing YS-D2 profile, maybe the difference is very small and no sense to update. I will specify. Please wait for few days. I will share the info.

YS-D3 profile will be added to UWT firmware at the end of this week. I will also share TTL test results of YS-D3 by optics and by sync cord.

UWTechnics triggers support Backscatter Mini Flash. They all were updated specially for this strobe in September-2020. As example, this is product #11075-HSS i tested with Sony A7-A9 and MF-1 strobe:

I evaluated Z-240 sensitivity range few years ago. Z-240 optical receiver was more sensitive in red light, than in white light. And yes, it also has sensitivity in near infrared, but in red range it is better. That was a reason for red LED usage in TTL triggers. And later this solution was confirmed for many times in comparison tests.

Hi Chris, I will post the results here. I will receive YS-D3 after a week or so.

I guess YS-D3 must work TTL by wires normally. I don't see any problem for that. Officially, we did not test YS-D3 TTL by the sync cord yet, but plan to do it. If you can wait about a week, until we get YS-D3 for tests, we can supply you with the confirmed information. Let's be in contact by e-mail. YS-D3 does not have HSS. Only Retra strobes have HSS functionality. If you want HSS, you need "Retra Pro" strobes and UWTechnics TTL-Converter marked "HSS", those new boards have HSS updated firmware and hardware (available since August-2020).

No, it is not manual. UWTechnics TTL-Converters have electric TTL for sync cord, the same as optical TTL for fiber cable. Both connections work TTL. Of course for sync cord usage, user has to install an electric bulkhead on the housing. This is popular option.

YS-D3 has an extremely low optical input sensitivity. To control such input, Sea&Sea produces their own optical YS Converter, powered by big size AAA batteries (2 pcs.). Those batteries have only 12 hours of continuous working time, because device eats a giant energy, like a xenon flash. I don't think that such power solution is adequate for LED control systems at all. YS-D3 needs it for optical control. By the way, did you try YS-D3 with an electric sync cord? Most of TTL Converters on the market also can control TTL strobes by electric sync cord, it can solve the problem.

I tested TTL of Canon R5 few months ago. TTL protocol is the same as in other Canons of course, but TTL module inside R5 camera has significantly different profile (ttl-curve) than other Canons, and also some other problems. It can cause potential problems of compatibility .... Few months ago UWTechnics even developed a special ttl-curve for TTL-Converter firmware, - specially for R5 camera support.

You mean #26308 product (black color PCB). It did not have Retra TTL profile, no HSS support. Yes, for usage with Retra Pro, you have to replace TTL board.