It is a common misconception that when you run the High Pass filter you are left with an image that is baseline 50% gray and only shows brighter or darker tonality at the edge contrast and texture detail. Instead, High Pass may retain color information from the original image. This can lead to color shifts or colored fringe along a high contrast edge similar to haloing.
Notice the remaining color.
- Run a Black and White adjustment instead and modify the tonality of the color arcs.
- Use multiple layers of High Pass set to different radii.
- Leave the color in your layer in order to generate a color boost. Watch out for fringing!
- Use the filter on a Smart Object so you can make changes.
- Invert your filter layer to decrease contrast and texture detail.
- The sky especially blue sky.
- Areas of constant color or tone.
- Flowing water.
- Out of focus areas.
- Human skin especially female skin.