Lightroom Banding not visible in Photoshop

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  • Updated 1 year ago
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I've been having some problems w/ my camera (Sony A7RII) lately - specifically night photography, sometimes long exposures, but not necessarily. Overall, shooting RAW, I get poor quality images and banding in the sky, or posterization, especially anywhere there is smoke or fog, clouds, etc. I could swear this wasn't a problem when the camera was new. I reset all my camera settings but still. Generally, lately, the night images tend to look muddy, especially in the conditions above, or when shooting in a club w/ colored lights, especially red lights. Before sending it in for repair, I tried to do some experimenting and noticed that some of the problems with banding/posterization were only in Lightroom. As far as the muddiness and colored lights and some banding/posterization, that seems to be the camera itself. But for the images giving problems in LR, when I open the same file in Photoshop, the sky is actually clear. Also If I crop into the image in LR sometimes the banding is reduced (like maybe it's processing that area better), but it never looks great. When I export the file as a jpg, some of the banding is also better. But it seems overall that LR is not handling the files all that well. Any thoughts?

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rdbot

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Posted 1 year ago

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Todd Shaner, Champion

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In LR Preferences> Performance uncheck 'Use Graphics Processor.'
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rdbot

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Thanks for your help.. That seems to help, but it doesn't go away completely. Zoomed out on some images, I still see the banding, but when I zoom in, LR, it further processes the image and that helps, but not completely. When I zoom out it's a bit better than before, but still banding. Why does your suggestion help, and would unchecking that affect anything in a negative way? Seems counter-intuitive... best, 
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Todd Shaner, Champion

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The best way to determine what is happening is to review one of your raw files with edits applied. Adjust one of the images that exhibits banding as you normally would . Export to DNG file format and upload the DNG file to Dropbox or other file sharing site. I'll see if banding is visible on my system, which would indicate an issue with the camera or one of its settings.

Unchecking 'Use Graphics Processor' may cause some control slider lag in the Develop module, but otherwise of no consequence. Some GPUs and/or GPU drivers aren't fully compatible with LR and can cause preview artifacts like banding. Incompatible monitor profiles can cause this as well, which I can determine by reviewing a DNG copy with your edits.