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Photoshop CS6: The Missing Manual by Lesa Snider

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Chapter 5. Controlling Color with Channels

At the heart of any Photoshop file lie channels—storage containers for all the color information in your image, selections you’ve saved, masks you’ve created, and instructions for printing with special inks. Channels sound intimidating at first, and folks have been known to shudder at their mention and avoid them completely. But to really understand Photoshop, it’s good to get a grip on channels. Luckily, you don’t need a PhD to do that—just a little patience.

This chapter gets a little technical at times, but if you soldier through, you’ll be rewarded with wisdom that’ll help you perform some amazing pixel wizardry. You’ll get a warm, fuzzy, enlightened feeling as you learn to:

And that’s just the tip of the iceberg. Everything you do in Photoshop involves channels (well, save for paths and text, which you’ll learn about in Chapters Chapter 13 and Chapter 14), so it’s important to get familiar with them. If you understand how Photoshop does what it does, you can make it do even more in less time and with less effort. That’s called working smarter, not harder—which is why, ...

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