What Do Amount, Radius & Threshold Really Do When Sharpening?
If you’ve ever used Unsharp Mask or a similar sharpening tool, you’ve probably seen three controls: Amount. Radius. Threshold. They can seem technical, but each has a specific job. Once you understand them, sharpening becomes much easier. Sharpening doesn’t actually restore missing detail. Instead, it increases contrast along edges, making existing detail appear more defined. […]









