In Photoshop CS3, both USM and Smart Sharpen are available as sharpening tools. How do they differ, in the way that they should be used and the results produced? What is your preference, or does the choice of sharpening tool depend in some way upon the image under consideration?
Also, does Photoshop CS4 improve upon these tools, or add something that is new and possibly better?
Norm Dulak







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