What it does
Allows you to sharpen edges in pixel images by applying the unsharp mask filter.
This filter:
- Compares adjacent pixels (specified by Radius and Threshold) to determine which pixels to correct.
- Increases the contrast of these pixels (specified by Amount).
You can modify the amount of contrast to be applied when correcting pixels (Amount), the distance (Radius) and the brightness difference (Threshold) between adjacent pixels.
The effects of the unsharp mask filter are far more pronounced on-screen than in high-resolution output. For print, experiment to determine which options work best for your image.
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