Correct, it has no settings applied. This was the .raf straight out of camera and it jumped right out at me on import. Then I simply exported this dng out of Lightroom. If I then re-import the dog back into Lightroom I see the same issue. Im using a 2010 iMac. Its not calibrated but, and correct me if Im wrong, wouldn't that be irrelevant as the issue seems to be that the develop and library modules treat the process the image differently anyway? Thats super interesting that you're not seeing any banding. Heres a .psd file with some cropped screen grabs.  Dropbox - developLibrary.psd The bottom layer is from the develop module, and the top is from the library. As I switch the top layer on & off I can see the image change as banding comes and goes. Its subtle but its there. Anyway, so long as the develop is fine and I can export jpegs at 100% which are also fine then Im good to go. Thanks so much for looking into the issue. Im leaving on vacation now. Hopefully, I'll take some good photos! -A ... View more

Thanks for your response. Sorry, If Im sounding rather angry above. I just spent 4k on camera equipment and Im leaving for vacation today so spotting this issue at the last minute fried my brain a bit. Now Ive explored a bit more and am feeling calmer. Heres a link to the totally unprocessed dng: Dropbox - DSCF1413.dng Admittedly it is subtle but there is banding in the gradient of the sky in the library module. As you switch from library to develop you can see the banding disappear.  Now, Im far from an expert but it seems almost like a bit depth issue or something? And i guess this is a tough image because the gradient in the sky is so perfectly smooth and the dark blues make it hard to keep it that way. Heres the bit where I calmed down - when I export to jpeg, if I set the quality slider to 100% the jpeg keeps the gradient and loses the banding. So although its a little frustrating that library isn't showing me a perfect image I am now back to being a fairly happy Lightroom user. Any thoughts on this issue? ... View more

Im having the same problem since I switched from Canon to Fuji so Im thinking theres something in the way Adobe is reading the x-trans raw files. In the library module, my low light pictures have really bad banding where there should be soft gradients. In Develop it looks fine. I haven made any adjustments at all. Its infuriating to the point where I don't want to use Lightroom anymore. I downloaded the trial of Capture One and the pictures look great. Now Im thinking of just switching to Capture One. This is so disappointing because its only a couple of years since I made the switch from Aperture to Lightroom. The original poster is dead right. Why on earth don't the exported photos look like the one in the develop module? Thats absurd. Will be interested to hear what camera the OP is using. Im pretty mad cos I just bought into the Fuji system and I love it but now Lightroom is making me regret it. ... View more