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Gamma

SmartNote: 221
Type: Term
ColorGeek factor: unrated
A non-standardized measure of contrast for color scanners, video monitors and photographic materials. A gamma of 1.0 usually means normal or no change in contrast, except in Macintosh monitors where gamma 1.8 is standard. Higher gamma numbers usually mean more contrast with darker mid-tones. Lower gamma numbers usually mean lower contrast and lighter mid-tones. Gamma pivots on (does not change) the white and black point of an image. Gamma is typically applied by raising fractional L*, fractional RGB or fractional XYZ to the power of gamma.

See Also

Term: Curves, tone curves