Linary wrote:
You are describing the white edge line which can occur in camera as well as a Post Processing problem.
It usually shows up where two edges are touching each other and the contrast is high. It is very common when a picture is "over cooked" (see the example below - look along the horizon and for a really good example along the rooftop where it meets the sky.
This image I have deliberately overcooked to demonstrate the 'halo'.
Over sharpening, over saturation and winding up the contrast and exposure will almost guarantee the effect. To fix it - go back in your History panel one step at a time until the problem disappears, then reduce the amount of whatever the cause.
In this picture, the white band does not show on the original, (not posted), but makes its presence known in the Lightroom History panel at Vibrance and Saturation. The effect had been enhanced greatly by passing through Nik's Tone Mapping software. Check out the lamp-post in the foreground, Green, White, Blue and Purple fringing in one stroke!
You are describing the white edge line which can o... (
show quote)
Great explanation. Thanks!