Giulio Zanni Posted December 3, 2015 Share #1 Posted December 3, 2015 Advertisement (gone after registration) Please take a look at the sky of the attached image. I only adjusted the exposure and I see banding in the sky, with some colour cast. I was doing some tests and this is a 40 second exposure with a 10 stop filter + red filter. I previously noticed some colour cast in the water when doing long exposure. Anybody experienced this? Thank you, Giulio 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! Quote 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/253911-banding/?do=findComment&comment=2941930'>More sharing options...
Advertisement Posted December 3, 2015 Posted December 3, 2015 Hi Giulio Zanni, Take a look here Banding. I'm sure you'll find what you were looking for!
pgk Posted December 3, 2015 Share #2 Posted December 3, 2015 Was the file shot as RAW? How underexposed was it. Was the sky very blue? Was it on a Monochrome? In my experience, shooting an intense blue sky and underexposing is the most likely scenario for banding. Its where you are likely to have least information to play with. I'm not sure of the advantage of the ND filter for such a shot. Quote Link to post Share on other sites More sharing options...
Giulio Zanni Posted December 3, 2015 Author Share #3 Posted December 3, 2015 Was the file shot as RAW? How underexposed was it. Was the sky very blue? Was it on a Monochrome? In my experience, shooting an intense blue sky and underexposing is the most likely scenario for banding. Its where you are likely to have least information to play with. I'm not sure of the advantage of the ND filter for such a shot. It was shot in DNG compressed on a Monochrome type 246. I will do other tests with compression off. The file was not much underexposed and the banding comes up when increasing the blacks. I was doing tests with ND filters as I just got the camera and wanted to understand its limits before committing to a second body. Quote Link to post Share on other sites More sharing options...
pgk Posted December 3, 2015 Share #4 Posted December 3, 2015 It was shot in DNG compressed on a Monochrome type 246. I will do other tests with compression off. The file was not much underexposed and the banding comes up when increasing the blacks. I was doing tests with ND filters as I just got the camera and wanted to understand its limits before committing to a second body. ND filters can cause colour shifts (or in your case tonal shifts) but I doubt that the use of the ND filter is significant in this case. Most likely its simply underexposing the blue info due to basic underexposure and the red filter. Quote Link to post Share on other sites More sharing options...
Giulio Zanni Posted December 3, 2015 Author Share #5 Posted December 3, 2015 Here I see banding in the water and magenta cast. I am wondering if there is a problem with the sensor http://www.l-camera-forum.com/topic/253664-ohrid-macedonia/ Quote Link to post Share on other sites More sharing options...
Bill Livingston Posted December 3, 2015 Share #6 Posted December 3, 2015 I can see the banding very clearly... Along with a bit of dust and what appears to be small thread on the edit hand side about halfway down. I suggest you get a Leica dealer to check it out for you regarding the banding and give you a sensor clean at the same time. Quote Link to post Share on other sites More sharing options...
Giulio Zanni Posted December 3, 2015 Author Share #7 Posted December 3, 2015 Advertisement (gone after registration) I found out that most of the problem seems to come from Lightroom, where the image looks much better in the develop module than in the library module. The problem is that the image gets exported from the library module. Quote Link to post Share on other sites More sharing options...
250swb Posted December 4, 2015 Share #8 Posted December 4, 2015 Yes this is a post processing and/or exposure problem, so make sure you are first of all converting your image to a 16 bit TIFF from RAW. It would usually happen if too little information is being stretched, so banding and posterisation occurs, but in this image it is entirely mid tones and flat with no contrast, so it's probably also under exposed. As for your colour cast, it is impossible to get from the camera RAW file without you introducing some setting or other at the post processing stage. But if your monitor isn't calibrated you may also see artificial tints of colour. If it is anything other than a post processing issue you could begin by looking at the filters you've stacked together. Steve Quote Link to post Share on other sites More sharing options...
Giulio Zanni Posted December 4, 2015 Author Share #9 Posted December 4, 2015 Thank you Quote Link to post Share on other sites More sharing options...
Akaki Posted December 12, 2015 Share #10 Posted December 12, 2015 I thing this's filters stuck together problem, I have same problem with stuck 2 ND filters 3 and 6 stop. could be post processing problem… I have to check with software. Quote Link to post Share on other sites More sharing options...
Akaki Posted December 12, 2015 Share #11 Posted December 12, 2015 With 16 bit it's less problem with banding is still there but not so dramatic 1-2% Quote Link to post Share on other sites More sharing options...
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