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Lens correction bug, bad artifacts with contrast adjustments...

Feb 24, 2012 10:20 AM

Something has changed between LR3 and LR4 in the processing chain for lens corrections.  Doing an extreme correction (e.g. using a LCP for a fisheye lens) with increased contrast causes bad halos at contrast edges.  The effect doesn't occur with the same settings on LR3.  It is almost as if the LCP is being applied after the basic controls rather than before?!?!?!?!

 

Ken

 
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    Mar 5, 2012 8:14 AM   in reply to kwalsh74

    Can you post an example?

     
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    Mar 6, 2012 6:34 AM   in reply to kwalsh74

    Yep, I can confirm this bug.

    20050911_4057_.jpg

    Easy to reproduce indeed:

    1. Extreme distortion correction.
    2. Any of the new "edge-adaptive" sliders: Highlights, Shadows, Clarity.
     
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    This should be fixed in the final Lr 4 release.

     
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    Mar 6, 2012 7:23 AM   in reply to MadManChan2000

    Nope, at least my example if from the final version.

     
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    Hmm, can you please share your test image with me?  I tried on a few of my test images, using Manual Distortion -100 or +100, and similar values for Horizontal and Vertical, to produce an extreme warp.  I then cranked Highlights to -100, and/or adjusted Clarity to +100, and did not see any misalignment artifacts.

     

    You can use YouSendIt.com, dropbox, etc. with madmanchan2000@yahoo.com.

     

    Thanks!

    Eric

     
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    Mar 6, 2012 8:07 AM   in reply to MadManChan2000

    Sure, I can. But it happens on every image (I use Nikon D80 raws, fwiw).

     

    I could not reproduce it with manual distortions either, I used a Nikkor 10mm fisheye as the OP suggested.

     
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    And wihle I was chasing this one I have ran into this issue: http://forums.adobe.com/thread/971515?tstart=0.

     
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    Ok, that's a good clue (the profile).  Let me check with that.  If I still can't repro on this end, I may ask you again for the file.  For now, please hold off.

     

    Eric

     
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    That's right, we discussed this one earlier (about using the sliders out-of-order and hence the interaction dependencies).

     
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    Hi Dorin,

     

    I tried to repro this problem with D80 images and the Nikkor 10mm fisheye, but could not.  Can you please send me an example image, with your adjustments?  (You can also convert to DNG so that the adjustments are embedded, if you wish.) 

     

    Eric

     
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