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Photoshop® CS3 Bible by Robert C. Fuller, Laurie Ulrich Fuller

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Chapter 10. Corrective Filtering

In Photoshop, filters enable you to apply automated, yet customizable, special effects to an image. Although named after photographers' filters, which typically correct lighting fluctuations and perspective, Photoshop can help you accomplish much more. You can slightly increase the focus of an image, introduce random pixels, add depth to an image, break an image apart, or mimic a variety of artistic media, textures, natural and man-made substances, and distortions. Just about anything you can imagine doing to your photo can be achieved with one or more of the filters — and some of the most amazing results can be obtained through filter combinations, making for a nearly unlimited number of effects.

You may be approaching the whole concept of filters with some skepticism. If you're a veteran photographer or seasoned Photoshop user, you may want to write them off as little better than the layer styles discussed in Chapter 18, a bunch of "canned" effects ...

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