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Appendix E
White balance
The human eye is able to adapt to changes in lighting, and consequently to humans a white
object will still look white whether viewed in direct sunlight or under overcast skies, or indoors
under incandescent or fl uorescent lighting. A digital camera, in contrast, must adjust colors
according to lighting if colors that appear white when viewed directly are also to appear white
in the fi nal photograph. This adjustment is called “white balance.”
White point
The input value above which all input tones are mapped to the maximum output value (the
default for the master channel is white). Any details brighter than the white point will be lost.
See also Tone, Tone curve.
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