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DP, gamma is a bit of a tricky subject, and the "right" setting is more of a black art than science if you ask me :-)
It's good to adjust the gamma down a bit, cause that increases the visible contrast in the image so it makes life easier for you or me as we try to get focus correct etc - but it's also a lossy process that discards some of the image data so we don't want to adjust it down too far or we end up with only a few colour levels in our image instead of all possible colours.
Try setting the gain to somewhere around halfway, if the image starts looking too dark then bring it back up a little.
Gain is another thing entirely - you should crank that up until your image is nice and bright without oversaturating. There's no information loss unless you over- or under-expose.
We would have been talking about gain in the earlier posts, not gamma.
regards, Bird
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