I got a chance to test my Subal D200 / Inon Z240 shooting WA in Grand Cayman. The Sea & Sea iTTL converter did a fine job with my Sigma 15mm.
Here is my entire gallery. I also used the iTTL converter with my 60mm and my 60mm + 2X TC. Overall, it works extremely well (IMHO)
http://www.myunderwaterworld.com/GC07.htm
Dave


Here is my entire gallery. I also used the iTTL converter with my 60mm and my 60mm + 2X TC. Overall, it works extremely well (IMHO)
http://www.myunderwaterworld.com/GC07.htm
Dave