Pattern (moire?) appears after export from LR

3 months 1 week ago #760536 by Esseff
I shot a concert last night and during editing I noticed that some photos have a pattern on them after exporting to jpg. The pattern is not visible in Lightroom, it only appears in the exported photos. Not sure if this is the moire effect as that should be visible in LR, this definitely isn't. It also doesn't affect all photos. I tried a whole host of export options i.e. shifting colours, reducing saturation, adding a mask with moire reduction, exporting as tiff, different sizes, and more. I'm hoping this is something I can remove but I'm running out of ideas.

Open to suggestions. Obviously reshooting the concert is not an option.







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3 months 1 week ago #760547 by GodsCreation
Could you show a screenshot of the photos inside of Lightroom?


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3 months 1 week ago #760551 by Esseff

GodsCreation wrote: Could you show a screenshot of the photos inside of Lightroom?






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3 months 1 week ago #760552 by Esseff
Made some headway with this problem. I decreased the blacks and under detail I increased radius, detail and masking to maximum. Not entirely sure what the last three do exactly but fiddling with them seems to have some effect. It's not perfect but much much better than before.


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3 months 1 week ago - 3 months 1 week ago #760576 by Shadowfixer1
What are all the original settings in the detail panel before the changes? I never go above 1.0 on the Radius. I leave detail alone at the default of 25. If you hold down the ALT key while adjusting the masking, it will show what is being sharpened. The white part is sharpened and the black part isn't. My masking setting is usually around 90. Sharpening amount is from 40 to 100 depending on whether I will open in Photoshop or not. I will do most of my sharpening in Photoshop.
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3 months 5 days ago #760783 by Owen
Never seen this before, did you find the cause?


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3 months 4 days ago #760819 by Esseff

Owen wrote: Never seen this before, did you find the cause?


Yes I did. Found a solution too. :)

Cause: Low light enviroment. The venue was basically just a room with no direct lighting on the bands (the audience was better lit). In trying to clean things up and lighten the scene LR added the chequered pattern. Technically not a moire (I've been told) but rather the algorithm losing it's way.

Solution: Brush mask over the affected area and add noise. All gone.


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