Originally posted by enoxatnep Like many others, I've noticed the tendency of the K20D to underexpose in order to avoid highlight blowouts, i.e. the histogram is usually to the left of center.
Averaging a bit left of center - about half a stop - is actually *correct* exposure by ISO standards. that's the case even when there are no highlights to worry about - like shooting a gray card. But indeed, if there are highlights in danger of blowing, Pentax cameras will exposure darker still.
I would assume from this that Pentax feels that preserving highlight detail is more important than the risk of losing shadow detail.
Quote: [*]In a contrasty situation, is it better to overexpose to preserve shadow detail, or to underexpose to preserve highlight detail?
It is best to decide which area interests you more, and concentrate on exposing for that. You're simply not going to get good detail in both highlights and shadows in a high contrast scene. But if you decide to try anyhow, you can often get *something* (even if noisy and generally not pleasant) out of an underexposed shadow. You'll often get *nothing* out of an overexposed highlight.