sharpening halo

[WIlliam Maroldo]

This may very well have been mentioned , or may not be the correct way to do it, but I've been doing the duplicate layer thing, applying USM to the top layer, and when the sharpening effect is good, except for a sharpening halo in a few areas of high contrast, I just use a small erasure brush and erase them. Then flatten the image. Seems to work, and get rid of the sharpening halo. Seems too simple.~Bill

[David Thomasson]

This may very well have been mentioned , or may not be the correct way to do it, but I've been doing the duplicate layer thing, applying USM to the top layer, and when the sharpening effect is good, except for a sharpening halo in a few areas of high contrast, I just use a small erasure brush and erase them. Then flatten the image. Seems to work, and get rid of the sharpening halo. Seems too simple.~Bill

This is less simple, but a more effective way to avoid halos and also creating noise in "flat" areas: Build an edge mask so that everything is blacked out (on the mask) except the edges. The only part of the image that gets sharpened is where the white edges are on the mask.

http://img520.imageshack.us/img520/7045/edgemaskln0.jpg

=== My Home === (http://www.radiantpics.com/)