January 15, 2007 by John Dickinson  | 5,550 views | Comments (4)

This quick reference guide shows you how to use Curves similar to the way you use Levels, but keep in mind that Curves’ real strength lays in the fact that you can add multiple points to each curve. Amongst other things, this allows you to make corrections to one part of an image’s dynamic range without affecting another. Keep in mind also that unlike Levels, lowering the equivalent of Output White and Output Black in Curves changes the gamma. View guide

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