Day 48: "What is Unsharp Mask, and how do you use it to sharpen pictures?" is a question that we get often from readers. Today's tip provides the answer.
Almost any image can profit from sharpening, but this is a subtle improvement that won’t fix poor focus. The most common sharpening tool is Unsharp Mask. (The strange-sounding name comes from an old darkroom technique.)...
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