The D200 gives you the ability to set a number for white balance underwater. Recently I had the opportunity to use the magic filters and I loved them.

I know the color temperature changes with conditions and depth, but anyone have a number that one might use or has anyone ever studies the "typical" color temperature and different depths.

Since one can shoot in RAW would it work OK to choose something close and then adjust with software?

SD

Previous Nikon DSLRs have had this feature too. It is only useful in very controlled lighting conditions (e.g. studio). I would imagine that UW shooting would be the least suitable time to use this!

If the D200 is like the D2X and D70. Set the white balance to preset with the filter. Then before you approach a setup with the filter, press the WB button and hold for a second. Then take a shot of the subject to set the WB and then take another shot of the subject for your image. It is only is hardly any more difficult than taking two images of the subject.

I know some people do find this a pain. But it gets very easy with practice. And if you consider all the money and skills spent to get in front of that subject, I don't think that taking an extra shot to set the WB is really too much trouble.

A fixed number WB can be useful for some strobe lit shots - where the lighting is pretty consistent. But it will vary with strobe model - I would use 4500K with my Subtronics for wide angle and maybe 3500-3800K for macro.

But I would recommend just sticking it on AUTO for strobe shots and letting the camera have a guess. It is usually pretty good, and if it isn't then you can always adjust in RAW.

Alex