High Pass
The High Pass filter retains details where sharp colour transitions occur, generally at the edges, and suppresses the rest of the image.
The High Pass filter retains details where sharp colour transitions occur, generally at the edges, and suppresses the rest of the image.
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.
The following settings can be adjusted on the vertical slider:
Radius—controls how many pixels are kept and how many are suppressed. (At higher radius values, only edge pixels are kept.)The following settings can be adjusted on the context toolbar:
Split—enables the Before and After view. When toggled, it presents filter application side by side.
Apply—applies changes made.
Cancel—cancels changes made.