Blue Fringe around Leaves Against Blue Sky

Discussion in 'Digital Discussion & Q&A' started by The_Pearl_Poet, Nov 1, 2015.

  1. The_Pearl_Poet

    The_Pearl_Poet No longer a newbie, moving up!

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    In the upper left-hand corner, I'm having trouble with a blue fringe around the trees. I have tried using CA tool in camera raw to correct it, but I have had little success. It is present in the original exposure, which is a 3 image blend, but is relatively minor. Necessary increases in contrast and vibrance have led to an exacerbation of the problem. Does anyone have any advice on how to address this problem? Examples are attached.


     

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  2. jaomul

    jaomul Been spending a lot of time on here!

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    Are you trying to correct this on a jpeg or raw file?
     
  3. The_Pearl_Poet

    The_Pearl_Poet No longer a newbie, moving up!

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    Raw
     
  4. jaomul

    jaomul Been spending a lot of time on here!

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    Ok sorry, I was goinfg to suggest editing in raw.

    Depending on the lens, stopping down, or indeed not stopping down so much may help. This doesn't help you now for this image but may do going fwd. Very nice photo btw
     
  5. Jim Walczak

    Jim Walczak No longer a newbie, moving up!

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    It's my experience that more often than not, such a fringe..blue or magenta... is often due to some shortcoming with the lens itself (chromatic aberration). I can't speak to other image editing programs like Lightroom, Gimp or Coral, but I know that Photoshop does have a pretty handy filter, "Lens Correction" that usually does a very decent job with such issues. I've used the filter rather extensively with my Tamron 18-200mm "super-pooper-scooper" (LOL), both as far as chromatic aberration and barrel distortions.....might be worth a try.
     
    Last edited: Nov 9, 2015
  6. KenC

    KenC Been spending a lot of time on here!

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    If the image matters enough to you it is possible to block the vibrance/contrast adjustments right along the boundary where you are seeing this. This is a nuisance, requiring painting black or dark grey on the layer mask of the corresponding adjustment layers with a small soft brush, following the "fringe" you want to remove. Another possibility is to add a saturation adjustment layer and partially desaturate along the fringe. There may be a more efficient way to do this and if so I'm sure someone will chime in.
     
  7. KmH

    KmH In memoriam Supporting Member

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    Check out 'purple fringing' and ways to get rid of it post process.

    Even better is to avoid using a lens that routinely produces purple fringing.
     

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