Fixing chromatic aberration with the Lens Correction filter
Chromatic aberration, or coloured fringing, has an annoying habit of standing out in prints more than it does on screen.
So it’s worth zooming into an image to 100 or 200% and checking it over carefully, paying special attention to the high contrast edges.
The Custom Chromatic Aberration controls in Photoshop’s Lens Correction filter are different from those in Camera Raw, and there are three sliding controls that correct red/cyan, green/magenta and blue/yellow fringing.
After zooming into a problem area of the image, simply adjust the sliding controls back and forth until you are happy that the fringing has gone. You may notice the image shift slightly as the controls are moved.
Lens profiles that automatically correct optical faults are installed with Photoshop and Camera Raw, but it’s also possible to create your own using Adobe’s free Lens Profile Creator software.
The process involves shooting a target chart, analysing the image and correcting the faults to build the profile.
There is also a free Lens Profile Downloader that enables Photoshop users to download other users’ profiles.
PAGE 1: Adobe Camera Raw Lens Corrections
PAGE 2: Apply vignetting with the Lens Correction filter or ACR
PAGE 3: Correcting dramatic distortion with the Lens Correction filter or ACR
PAGE 4: Fixing chromatic aberration with the Lens Correction filter
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