Frequently Asked Questions about Color

www.inforamp.net/~poynton poynton@poynton.com This FAQ is intended to clarify aspects of color that are important to color image coding, computer graphics, image processing, video, and the transfer of digital images to print. I assume that you are familiar with intensity, luminance (CIE Y), lightness (CIE L*), and the nonlinear relationship between CRT voltage and luminance – that is, gamma. To learn more about these topics, please read the companion Frequently Asked Questions about Gamma. This document is available on the Internet from Toronto at: I retain copyright to this note. You have permission to use it, but you may not publish it.