Defringing colored edges in photoshop
Ever had annoying colored edges that you wanted to get rid of? For example after doing channel masking there’s often a colored edge around transparent items like hair where the background lighting shines through. Another common annoyance is cromatic abberation where you have blue/yellow/magenta edges caused by the rgb channels not lining up correctly.
Here’s a simple way to defringe colored edges, whatever the cause.
Add a new layer on top of your original image. Set this layer to the color blending mode. Zoom into your image so the colored edge is easy to see. Hit I to select your color picker and pick a color right next to where the colored edge you want to remove, don’t click the colored edge itself. Switch to your brush tool, set opacity real low, like 20 and make sure the brush edge is real soft. Adjust the brush size so it’s around the same size as the edge you want to remove.
Now simply paint over the edge and watch it disappear like magic, it will take on the color of the underlying layer eliminating the colored edge.
If the edge continues and the color next to the edge changes, make sure to pick up the color with the color picker again so the color you paint over the edge matches.
