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The Hidden Power of Adjustment Layers in Adobe® Photoshop® by Scott Valentine

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Chapter 6. Channels, Color Space, and Bit Depth

Image

Photoshop sees images in terms of color channels, and uses different models to group the characteristics of color and brightness. Each channel is a piece of your image grouped by a specific color, such as red, green, and blue. You can mix various concentrations of these channels to arrive at all other colors in the color space.

Color Space

Image

Color space is a mathematical model that represents color to your computer. The two color spaces you are most likely to encounter in Photoshop are RGB (red, green, ...

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