Matt Laur , Feb 27, 2010; 07:53 a.m.
Well, that sounds correct. When you say the colors don't look right, are you talking about on your computer display, or in prints, or both?
Yes, you need to have your white balance correct for the light in which you shoot, or record a shot of a white balance target in that light, for use in RAW processing afterwards in post production. And then you MUST have your display calibrated, using a hardware calibration device and the accompanying software. Otherwise, you have no way of evaluating what you're seeing. And when you print, you must be using the the right printer profiles, taking into account the paper stock, which must match the profile.