Dolbie
Registered
Dolbie, If you are using a Canon Poweshot Camera you may want to do some research on CHKD FW. It allows you to load a new OS on your Flash card and shoot RAW images with your Camera that would not normally support Raw pictures. Shooting RAW means you do not need to worry about setting white balance and exposure as you can change those in an editing program (Such as the Free Google Picasa)
Russell,
Yes, I first started reading up on CHKD about a month before going on this trip. I got part way through installing it when I decided I'd better leave my camera's familiarity alone for now and experiment when I have more time to get used to the new OS.
My Powershot (540 I think) has an underwater mode which I was hoping would even out the green color of all my underwater shots, but it did not. I am looking into an inexpensive flash with a fiber optic tether. All my close up shots with the flash seemed to turn out okay.
I'm also going to be looking into the CHKD idea further.