High Pass

The High Pass filter retains details where sharp colour transitions occur, generally at the edges, and suppresses the rest of the image.

Before
After
Several live High Pass layers with Hard Light and Linear Light blend modes applied (selectively to masked areas).

About the High Pass filter

When a High Pass filter is applied at a high radius value to a duplicate layer and combined with a contrast blend mode (such as overlay, soft light or hard light), it can be used as a useful sharpening technique.

This filter can be applied as a non-destructive, live filter.

Settings

The following settings can be adjusted on the context toolbar:

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