Sigma DP2 User Manual download pdf (Page 54)

ADVANCED OPERATION

This section explains the application of the more advanced

functions of your camera, when composing the expressions of

your picture.

SETTING THE WHITE BALANCE（WB）

The color of light reflected by an object can vary depending on the

color of the light source illuminating it. For example, a neutral colored

object will reflect reddish light under incandescent lighting, and

greenish light under fluorescent lighting. The human brain is able to

compensate for differences in the color of a light source, allowing us to

see white objects as white, independent of the lighting condition. Film

cameras rely on special color-correcting filters and film types to adjust

for these differences in lighting. Digital cameras, however, are able to

use software to mimic the adjustments made by the brain, so that

colors that appear white to the human eye also appear white in your

photographs.

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Sigma DP2 User Manual Page 54