Nick_S Posted October 4, 2014 Share #1 Posted October 4, 2014 Advertisement (gone after registration) In the latest batch of photographs from my Monochrom camera I noticed a single landscape format photograph taken at ISO 10000 which has two horizontal black lines. I have included two 100% uncompressed crops from the JPG files, and there also appears to be a hot pixel located at (507, 164) in the first crop. So far, I could only find this one image with the black lines, but several others have the hot pixel in the same location. The SD HC card is a Transcend Class 4GB model. Are these artefacts normal or should the camera be returned to Leica for a closer look and perhaps a sensor remapping? Any advice would be appreciated. Nick (moderators please correct the spelling of "artefacts" in the thread title) 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! 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/234981-monochrom-horizontal-black-lines-and-hot-pixel-artifacts/?do=findComment&comment=2683180'>More sharing options...
Advertisement Posted October 4, 2014 Posted October 4, 2014 Hi Nick_S, Take a look here Monochrom horizontal black lines and hot pixel artifacts. I'm sure you'll find what you were looking for!
Overgaard Posted October 4, 2014 Share #2 Posted October 4, 2014 As far as I know, vertical lines are sign of remapping needed. Horizontal lines are noise. But I may be wrong. You can mail Leica in Wetzlar and ask their opinion before you send it. Link to post Share on other sites More sharing options...
pedaes Posted October 4, 2014 Share #3 Posted October 4, 2014 In the latest batch of photographs from my Monochrom camera I noticed a single landscape format photograph taken at ISO 10000 which has two horizontal black lines. I have included two 100% uncompressed crops from the JPG files, and there also appears to be a hot pixel located at (507, 164) in the first crop. So far, I could only find this one image with the black lines, but several others have the hot pixel in the same location. The SD HC card is a Transcend Class 4GB model. Are these artefacts normal or should the camera be returned to Leica for a closer look and perhaps a sensor remapping? Any advice would be appreciated. Nick (moderators please correct the spelling of "artefacts" in the thread title) Why you taking landscapes at ISO 10000 ? Link to post Share on other sites More sharing options...
DigitalHeMan Posted October 4, 2014 Share #4 Posted October 4, 2014 Why you taking landscapes at ISO 10000 ? Landscape format as in not portrait format.... Link to post Share on other sites More sharing options...
Nick_S Posted October 4, 2014 Author Share #5 Posted October 4, 2014 As far as I know, vertical lines are sign of remapping needed. Horizontal lines are noise. But I may be wrong. You can mail Leica in Wetzlar and ask their opinion before you send it. Thanks, I was surprised to see single pixel width black lines against the backdrop of random noise that are horizontally oriented (i.e., taken in "landscape format", Pedaes). I checked the individual pixel values and they vary from typically (0,0,0) to (20,20,20) with some higher values occasionally appearing on the line e.g., (50,50,50). Nick Link to post Share on other sites More sharing options...
jdlaing Posted October 4, 2014 Share #6 Posted October 4, 2014 Show the whole image un cropped. Link to post Share on other sites More sharing options...
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