Ken Waller wrote:
I've found on my K-3, K20d and K10, in some cases, the individual channels - R, G, B need to be reviewed separately on the in camera histogram to prevent blow out of details in that specific channel, especially R.
Exactly. I learned that early on when photographing flowers. Any photo that has a lot of light in any one of the channels is in severe danger of blowing out that channel. The light meter looks at an average of all light, so if you are shooting a scene that is mostly one color, and fairly brightly lit, the metering will be based on all three channels and will overexpose for that one color.
These days, in dynamic lighting conditions, I tend to shoot Tav, with compensation set a bit under exposed (one to three stops) because with ISO invariance I'm better underexposing than clipping.
This ties into the thread on cropping in that I think that I've lost more photos due to optimizing for the wrong thing, than anything else. I'll try to not push the ISO too hard, and will end up with too slow of a shutter speed. I'll try to shoot action so that I don't need to crop, and end up with what would be a great photo, except for the virtual amputation of a subject's limbs. I think that just about every engineer is painfully familiar with the problems of optimizing for the wrong things, programmers that spend two weeks optimizing code that hardly ever runs, and ignoring the loops where the computer spends most of it's time. Or worse, spending all that time optimizing that one section of code, and missing the deadline.
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