This sharpening technique doesn’t use the Unsharp Mask filter, but still leaves you with a lot of control over the sharpening, even after the sharpening is applied. It’s ideal to use when you have an image (a photo with a lot of edges) that can hold a lot of sharpening, or one that really needs it.
Open a photo that needs edge sharpening. Duplicate the Background layer by pressing Command-J (PC: Control-J). The copy will be named Layer 1 in the Layers palette.
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Go under the Filter menu, under Stylize, and choose Emboss. You’re going to use the Emboss filter ...