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Thread: Purple edges

  1. 9th May 2012, 12:22 AM #1
    whited3
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    Purple edges

    Hi folks,

    Looking for some help please in identifying the source of the purple edge below. The crop is from an unedited RAW capture.

    Canon 7D, Cannon EF-S 10-22mm @ 10mm, ISO 100, f6.3, 0.4, Lee .9 GND. 15 minutes before dawn.

    The purple appears around the edges of most of the shots I took that morning. I've had to crop them out in post processing. The second image below is the next shot in sequence, edited in PS.

    Purple edges

    Purple edges
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  2. 9th May 2012, 12:36 AM #2
    vladimir
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    Re: Purple edges

    Purple fringing?
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  3. 9th May 2012, 12:47 AM #3
    Manfred M
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    Re: Purple edges

    It's called lateral chromatic aberration. You can fix this in ACR using the Lens Corrections button and check the "Remove Chromatic Aberration".
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  4. 9th May 2012, 03:27 AM #4
    FrankMi
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    Re: Purple edges

    Quote Originally Posted by whited3 View Post
    Canon 7D, Cannon EF-S 10-22mm @ 10mm, ISO 100, f6.3, 0.4, Lee .9 GND. 15 minutes before dawn.
    Very dramatic image Mark! Thank you for sharing!
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  5. 9th May 2012, 03:31 AM #5
    whited3
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    Re: Purple edges

    Thanks Grumpy, much appreciated.

    Quote Originally Posted by GrumpyDiver View Post
    It's called lateral chromatic aberration. You can fix this in ACR using the Lens Corrections button and check the "Remove Chromatic Aberration".
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