Originally posted by zosxavius It also bumps the iso and adds noise. That's why base iso goes to 200 when you use it. Personally, I would shoot critical stuff in raw and post process, but that's me. If I just need a bunch of jpegs and shadows are killing me I will turn on the shadow correction. I usually leave highlight correction on most of the time. The slowdown doesn't bother me much.
In all reality, with both the K5 and K7 the shadow and highlight correction, as well as other JPEG adjustments, when used corerectly eliminate the need for RAW for most situations.
I have always shot JPEG but found at times withthe K10, that it was overly contrasty, or at best difficult to get great wide dynamic range when needed, but with the K7 and now K5 it is a snap.
I shoot JPEG amost exclusively, nad raw as a safegaurd, using the RAW button when I think the shot will be a real important one.