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“Photo polish” a.k.a. local contrast enhancement

This is a neat trick where you “abuse” the unsharp mask tool in Photoshop to have a small sharpening effect (in other words contrast enhancement) over a large radius around object edges. The result is a subtle bump in edge contrast and if you don’t overdo it, no visible artifacts in the image. The most common misuse of this is an overapplication resulting in a halo around objects in the image. [...]

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