when I use my Olympus OM-D E-M5 topside with the small on-camera strobe in "fill" mode (=TTL), strobe exposure is 100% perfect.
But when I use it u/w with my two Inon Z240 (S-TTL), the results are... mixed, at least. With f/2.8 or f/4 the pics are always too bright, with f/16 or smaller they are too dark, even when the strobes are very close to the subject. That's not what "TTL" should be like.
So kinda out of frustration, I started using manual strobe settings with my new digicam. (I am talking about macro, of course. For wide angle I use manual strobe settings exclusively.) It does work, of course, but is sometimes a bit annoying.
In my "analog days" TTL exposure was something I never had to think about - it just worked, and it was sooo convenient.
I read about the Oly UFL-3 strobe. It is a Sea&Sea strobe which has RC integrated. From all what I have read about using RC strobes topside, they work perfect in terms of exposure.
So after all these words my question: Does anyone have first hand experience with the UFL-3? Does it give perfect TTL-macro-exposures underwater? This would be a perfect "starting point" for my attempts for more creative lightning