Local filters?

[jleech]

I've done a little research on the issue.  Magic Filters has come out with a green water filter that is supposed to do wonders.  I've never used it, but I think Doug Freeman on the WI scuba board has a UR-Pro green water filter.  Basically a magenta filter is basically what you need, but even with a filter, it does require setting white balance for each shot to get the ideal exposure, since the filter is optimized for a certain amount of green (which may not be what you have...)

I've been testing my new setup (DSLR in Ikelite housing) for a couple of months now.  I've tried simply setting white balance for a particular shot, and it works well, even without a filter.  The drawback is the time required to get the white balance set.  For simply documenting a dive, it's more effort than it's worth.  If you have a particular subject like a wreck that you want some specific shots, it would be OK.  If you are able to illuminate with a strobe, or flood light, no filters or white balance changes need to be used.

Photoshop can correct for a lot of things, but it can be time consuming as well as risking loss of quality in the picture.

If you come up with something, I'd love to see the results.

Jeff