Gamma Correction on the Apple Macintosh

Abstract

This note details the treatment of gamma correction on Apple Macintosh (tm) computers. Gamma correction is the process of precompensating for the nonlinear voltage-to-light intensity function of the CRT of a video monitor or a computer monitor, in order to obtain correct reproduction of intensity. Gamma correction is important if you want to obtain good picture quality and accurate color reproduction.

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My Gamma FAQ explains gamma correction in general. More detail is available in the Gamma chapter of my book Digital Video and HDTV Algorithms and Interfaces. The Gamma chapter from my previous book A Technical Introduction to Digital Video is available online in Acrobat PDF format.