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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 17th March 2011
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Falk Falk is offline
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Question auto distortion correction

Hi!

I use OlyViewer to process my ORF-files and almost always have the 'Auto Distortion Correction' enabled when I do so. I shoot mostly tele and macro in my mainly nature oriantated photography. So I seldom have any straight lines or architecture present which would maybe show distortion from the lense.

I feel the corrected photos tend to loose a bit of detail and/or sharpness sometimes, compared to the uncorrected OOC-jpg's. I don't know how the software does it's job but guess it certainly has to stretch and compress some pixles to level the distortions out. Especially for stretched parts there must be a lack of information, as far as the image content is concerned. The only thing I can think of is, that pixle data is extrapolated from the adjectend ones. But are these inserted pixles anything more then Artifacts?!

My question therefor is this:
Will I be better of if I don't use the correction feature in Viewer?
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Old 18th March 2011
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Re: auto distortion correction

Interesting question because I was talking to somebody the other day about lens distortion in non-architectural shots. It obviously happens, but we don't tend to notice it as much because there are few (if any) perfectly straight lines in nature - so not many people bother doing anything about it. I don't think I've ever tried to 'fix' an image of, say, a flower or an insect.

I tend to use Gimp if an image needs more than a basic tweak, but don't always manage to get badly distorted buildings to look right. When that happens I resort to almost fully automated software and use ShiftN. It's freeware. http://www.shiftn.de/
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Old 19th March 2011
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Re: auto distortion correction

Thanks Ellie for your comments. I had a look at the ShiftN prog as well. I even downloaded and played a bit with it Might be usefull one day, thanks for bringing it to my attention!
The author seems to have an unsusual hobby though
Douglas Adams grave certainly looks like it would need a little attention! To bad he's already gone - what a genius!
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