oHAI! :)
I'm Kit and I shoot between a Canon 20D and a Canon S1 IS. I have the WP-DC20 underwater housing for the S1 and I take it often when I go scuba diving. It's been a challenge trying to learn how to take good underwater shots. I often have a shadow on the bottom of the pictures and I think that's due to the underwater housing. I'm getting double strobes and maybe that'll help.
Bear with me. :)
Just purchased : Seavousplay.net = unveiling soon.