Color Correcting Digital Camera Images
http://www.layersmagazine.com/photography/color_correcting.php

Kelby, Scott
Layers Magazine
2005

Abstract:

As far as digital technology has come, there's still one thing that digital cameras won't do: give you perfect color every time. In fact, if they gave us perfect color 50% of the time, that would be incredible; but unfortunately, every digital camera (and every scanner that captures traditional photos) sneaks in some kind of color cast in your image.