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Chapter 5. Using Adobe Photoshop CS2 > Working with Selections

Working with Selections

Selections are especially important in Photoshop due to the pixel-based nature of the program. With the exception of text and vector shapes, everything in Photoshop is just a mass of pixels. If you have a photograph with a blue sky, don't think of it as a sky that's colored blue, but rather many, many blue pixels that together form the image of a sky. If you want to change the sky to a different color, you can't just select the sky; you have to select all the individual pixels that form the sky. At a basic level, if you want to manipulate only part of your image, you need to isolate that part so that other parts of your image aren't affected (see Figure 5.11).

Figure 5.11. A file with one area of the image selected.



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