Unsharp Mask

Unlike the name suggests, you can use this effect to sharpen the image.

Original

Hard

Item

Description

Ratio

Drag the slider or enter a value in the box to specify the amount by which you want to adjust the sharpness of edges in your image.

Radius

Drag the slider or enter a value in the box to specify how many pixels surrounding the sharpened edge are affected during sharpening.

Threshold

Drag the slider or enter a value in the box to specify how the filter determines edges: a setting of 0 will sharpen all pixels.