Axial Chromatic Aberration correction?

Discussion in 'Digital Photography' started by jerwin, Aug 8, 2016.

  1. jerwin macrumors 68020

    Jun 13, 2015
  2. chrfr macrumors 604

    Jul 11, 2009
    Yes, Aperture 3's chromatic aberration correction should handle it in most cases.
    If that doesn't work you could use a color adjustment brush to desaturate the purple areas.
  3. dwig macrumors 6502

    Jan 4, 2015
    Key West FL
    You'll likely find that true axial CA (out of focus purple "glow" around edges) can only be mitigated by desaturating the purple (magenta-red) area. The automatic CA removal algorithms found in most software only works on lateral CA (purple on one edge and green on the opposite side's edge and can also be a blue-yellow pairing). Since lateral CA is an alignment/scaling issue it can be fixed mathmatically. Axial CA is a focus issue and would involve selectively sharpening only the colors involved, which in an RGB image can't easily, if it's even possible, be isolated algorithmicly.

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