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Software Discuss Olympus Master, Studio and Viewer software applications as well as third party programs like Adobe Photoshop, Lightroom, Apple Aperture, and others.

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Old 11th August 2011
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On the fringe of things

It can happen even in the best regulated of photographs, just get the light and a hard edge towards the edges of the frame and you may end up with fringes, ugly streaks of colour that shouldn't be there.

The below was taken with with the E-PL1 and the 14-54 mk1.



The lhs shows fringes of green up the line of the roof and on the vertical columns, red fringes can be seen on the inside edges of the stonework, you can also see some sharpening artifacts but we'll be polite and ignore those (please).

You might say so what, that's a crop taken at 100% magnification, who cares?. Unfortunately sometimes it does matter when images are sent to third parties (such as picture libraries), they like looking for such things .

An answer that often works is to view the image at a high magnification (at least a 100%), select round the fringe as closely as possible and then desaturate that colour enough for the fringe to go away. That gives you the result on the rhs.

Nick
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Old 12th August 2011
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Re: On the fringe of things

Great tip and a great example, Nick. It doesn't actually remove the fringing but it does make it a lot less obvious and much harder to spot.
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Old 12th August 2011
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Re: On the fringe of things

Yes, that's a good tip and something I do on occasions.

There is a lens adjustment in Adobe raw where you can tweak the blue/yellow and red/cyan chromatic aberration by eye. It does a surprisingly good job. I've done this for my most used lenses then saved each as a preset in ACR.

Pete
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Old 12th August 2011
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Re: On the fringe of things

Thanks for sharing this tip

dave
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Old 12th August 2011
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Re: On the fringe of things

Quote:
Originally Posted by Zuiko View Post
Great tip and a great example, Nick. It doesn't actually remove the fringing but it does make it a lot less obvious and much harder to spot.
It actually works better than the example shows John, here is the same scene after trimming the fringe but before sharpening - also provides a good example (by comparison) of sharpening artifacts.



Nick
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