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Travis Manley


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Friday, June 26, 2009

Purple Fringing Quick Fixes


Purple Fringing, AKA: Chromatic Aberrations (sounds like something you would hear on an episode of X-Files), AKA: Lens Fringing. Even with the best lenses you will occasionally find these little buggers lurking amongst the edges of your photos. Purple fringing usually shows up as purple halo's around objects in the edges of your photos. Luckily there are a few easy Photoshop fixes you can do to get rid of them.

Lens Correction - Fire up Photoshop and go to the Filter menu, Distort, Lens Correction. This will open your image in the Lens Correction editor. Under the Chromatic Aberrations slider there are two options, depending on what kind of fringing you have use the appropriate slider. Hit OK when your done and goodbye chromatic aberrations.

Hue/Saturation layer - Here is an easy one. Open your fringing image...snicker, snicker... in Photoshop and click the Add Adjustment Layer button, select the Hue/Saturation option and where is says "Edit Master" change it to the color you want to get rid of, magenta for example. Then with the eyedropper tool click on the area of fringe you want to get rid of then slide the saturation slider to the left to desaturate that area.

Sponge Tool - Here is an even easier but, not always the most efetive way of removing chromatic aberrations. With your image open in Photoshop select the Sponge tool from the tool bar (it is hiding in the Dodge/Burn button if your not familiar, just right-click and hold and you will see it pop up). With the Sponge tool simply paint over the areas of purple fringing you want to get rid of. I find this helpful in landscapes or areas of foliage.

While these tricks are fine and dandy the best way to fix purple fringing to is avoid it in the first place. You can prevent purple fringing by using high quality lenses, stopping down your lens (shooting at an aperature of f8-f22), and if you are using a zoom lens avoid using the maximum and minimum focal range. A lenses "sweet spot" is usually somewhere in the middle focal lengths.


Hope these tips help.

If you have any questions email me at
travismanley@hotmail.com


*photo from my Shutterstock portfolio

3 comments:

  1. very nice post travis thanks a lot!

    cheers

    ReplyDelete
  2. Well covered, dude! The distort -> lens correction is news to me, ill have to try that. I kill a lot of my CA beforehand on my raws in Lightroom 2 as well.

    ReplyDelete
  3. I only recently learned about Lens Correction too. I also use it in Adobe Raw editor. I still havent gotten the hang of Lightroom, I need to work on that.

    ReplyDelete

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