As a digital photograher, understanding white balance is important to be able to take better photos with the right colors under a wider range of lighting conditions by avoiding color casts created by your camera’s Auto White Balance (AWB). Cambridgeincolour.com have a very useful tips and tricks article for understanding white balance.
“Under mixed lighting, auto white balance usually calculates an average color temperature for the entire scene, and then uses this as the white balance. This approach is usually acceptable, however auto white balance tends to exaggerate the difference in color temperature for each light source, as compared with what we perceive with our eyes.”
See also: Photography Tips