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Chapter 16.  Correcting Image Color  > Applying a Special Color Effect

Applying a Special Color Effect

Some of the commands on the Adjustments submenu of the Image menu—specifically the Invert, Equalize, Threshold, and Posterize choices—apply special color effects. Each of these commands works a bit differently and applies a slightly different effect, so the following steps provide an example of using one of them—the Posterize choice.

The posterizing effect reduces the number of colors used in the image, so that the image becomes composed of larger color areas, much like paint-by-number pictures or the way posters used to be designed.


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