LeeCat
Registered
I'm using Nikon D800 in Nauticam housing, 2x YS-D1 strobes with optical sync. On some images, about 20%, I have strongly underexposed bottom part of the frame - about 15-20% of the vertical size. The same effect randomly appears at different shutter speeds (1/200 to 1/320), with normal and rear-curtain sync. I don't see any regularity in the event and I can't reproduce it on land photos with built-in flash.
I'll be very much appreciated for any ideas.
I'll be very much appreciated for any ideas.