Posted Mon Sep 10, 2012 1:14PM
I've got a rejaction for this photo for purple fringing but I don't see it. I don't understad what to correct, I read some articles about purple fringing but I realy don't see it in my picture.
(Edited on 2012-09-10 13:38:36 by gpbaxi)
(Edited on 2012-09-10 13:39:16 by gpbaxi)
(Edited on 2012-09-10 13:39:48 by gpbaxi)
(Edited on 2012-09-10 13:40:39 by gpbaxi)
Posted Mon Sep 10, 2012 1:22PM
Your link is set to private, we wont be able to help until we can see a full size version
Posted Mon Sep 10, 2012 1:40PM
I hope this works
Posted Mon Sep 10, 2012 1:49PM
Where chain link meats the jacket button(around reflection of the button) for example.
(Edited on 2012-09-10 13:51:05 by Mijau)
Posted Mon Sep 10, 2012 1:56PM
It's all over the place. Purple mostly, but some green on the other side of the chain. You see it most where there is a sudden change from light to dark areas. The more the contrast the more fringing.
Google purple fringing for the methods of fixing it.
Posted Mon Sep 10, 2012 4:09PM
You have used a fast prime lens at f/1.8 which causes this particular chromatic aberration where out of focus highlights and high contrast edges have a magenta tinge in front of the plane of focus and green tinge behind. In this shot it is mainly around the chain but the edges of the coat are also affected The best way to avoid it is to stop down and at f/5.6 - f/8 it would probably be barely visible. It is difficult to correct automatically and the older versions of ACR and Lightroom don't even try. Lightroom 4.1 includes a new tool which is reasonably good.
Posted Mon Sep 10, 2012 4:48PM
Here is an old trick that works pretty well. (Why it works is a mystery.)
Duplicate the background layer (Ctrl J), Gaussian blur it about 20 px and change layer mode to "Colour". Add an opaque mask and paint 100% white with a small soft brush on the mask wherever you see the purple or green. Magically the CR disappears.
Thanks to jsnover for this valuable procedure.