visoflex Posted May 30, 2013 Share #1 Posted May 30, 2013 (edited) Advertisement (gone after registration) My M9 returned from Solms having been through the M9-P cosmetic surgery. Naively I thought all would be well, as it should be as perfect as it would ever be. I went to the Ansel Adams exhibition, and took the camera with me. I was a bit surprised with the patterns in the sky. They look like a sandy beach! Any idea of the cause? Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Edited May 30, 2013 by visoflex Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/205727-weird-sky-patterns/?do=findComment&comment=2334769'>More sharing options...
Advertisement Posted May 30, 2013 Posted May 30, 2013 Hi visoflex, Take a look here Weird sky patterns. I'm sure you'll find what you were looking for!
gravastar Posted May 30, 2013 Share #2 Posted May 30, 2013 (edited) It could be due to a faulty SD card/reader. It looks as if one or more of the least significant bits of the image data are missing. Have you tried a different card? The exhibition was superb. I visited twice, once at the beginning and again at the end of the last week. Bob. Edited May 30, 2013 by gravastar Link to post Share on other sites More sharing options...
zlatkob Posted May 30, 2013 Share #3 Posted May 30, 2013 Your camera is probably fine. Did you make some adjustments to the photos after they came out of the camera? It looks like you processed (or saved) the photos with a very low quality jpeg setting, so most of the data was lost. Link to post Share on other sites More sharing options...
Guest rivercityrocker Posted May 30, 2013 Share #4 Posted May 30, 2013 That's called banding. It's usually caused by over-processing a low-quality JPG. The M9 should definitely have enough bit-depth and dynamic range to handle a simple blue sky. Link to post Share on other sites More sharing options...
visoflex Posted May 30, 2013 Author Share #5 Posted May 30, 2013 Strange you should think they're low quality jpegs, as they were all shot as DNG's, and I can see this banding on the originals. Link to post Share on other sites More sharing options...
zlatkob Posted May 30, 2013 Share #6 Posted May 30, 2013 Did they look that way on the camera's LCD? What software are you using to view the DNG files? Link to post Share on other sites More sharing options...
visoflex Posted May 30, 2013 Author Share #7 Posted May 30, 2013 Advertisement (gone after registration) Well done that man! I went back and checked the DNG's and they were fine. The problem came on the export from DNG to JPEG. The quality slider had been set to zero for an internet forum job, and I had forgotten to reset it. D'Oh!! 4 Link to post Share on other sites More sharing options...
skinnfell Posted May 31, 2013 Share #8 Posted May 31, 2013 This looks a lot like banding induced by post processing. My guess is that the blue sky was either brightened, saturated or maybe even both. Then it depends on the color space of the exported JPG. Without seeing the original DNG file it is hard to give a definitive diagnosis of the problem. Any chance you can post it to dropbox or something? Link to post Share on other sites More sharing options...
andybarton Posted May 31, 2013 Share #9 Posted May 31, 2013 Visoflex has already explained what caused this. 1 Link to post Share on other sites More sharing options...
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