Hi Pavel, thanks for the headup!
Some corrections, can you elaborate a bit?
Another question: I read (I guess it was from you) that with this it is also possible to change underwater from TTL to manual and then even change the power of the strobes by turning the aperture/shutter wheel on the camera? Is this really true and can you elaborate on this as well?
Will be deeply appreciated...
For Subtronic i set -/+ Ev camera "Flash Exposure Compensation" for -0.5...-1.0Ev then. I don't remember the exact value. Converter firmware understands such correction. Pay attention that this is rough solution for this aim, it does not solve the issues totally, because TTL curve has rather complicated shape. But it works acceptable in medium conditions sometimes.
The best solution will be to build separate full curve for Subtronic. I think, it will be done in nearest future.
Modern TTL boards have possibility to switch TTL/M underwater. Usually, in menu any free camera function can be assigned for this aim. If you mean V2 board, user has to choose "Auto FP" in camera menu for switching TTL/M. This command "Auto FP" is assigned for Manual mode in Converter's firmware.
In this Manual mode TTL Converter does not make pre-flashes, but only the main flash.
In such Manual mode the TTL Converter firmware can adjust uw strobe power manually. User rotates camera wheel and looks digits on camera service screen, the same digits are in the viewfinder display. Camera function "Flash Exposure Compensation" becomes assigned automatically for this functionality by Converter's firmware in this mode. So, there are 17 available steps of power, - this is much better than usually suggested by the strobe's own dial switch. And this is more comfortably, because user adjusts lighting keeping hands on camera. I use this feature rather often, shooting currently with #11031 TTL Converter.
Edited by Pavel Kolpakov, 21 April 2017 - 07:17 AM.