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Photoshop CS4, Volume 2: Visual QuickStart Guide by Peter Lourekas, Elaine Weinmann

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9. Sharpening

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The difference between an unsharpened photo and a sharpened one may be subtle, but the former will look blah and undefined and the latter will have that extra, well, edge. In this chapter, you’ll learn how to use three sharpening filters in Photoshop: Unsharp Mask, High Pass, and Smart Sharpen.

If you’re wondering whether ...

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