AceVentura1986 Posted May 13, 2014 Author Share #21 Posted May 13, 2014 Advertisement (gone after registration) And if all else fails it is easy enough to make a little action or droplet to eliminate a pixel line as a batch. Jaap, Quick follow up question, Is there any way to accomplish this in Lightroom? I generally don't even open photoshop for most projects, but stay in Lightroom. Thanks. Link to post Share on other sites More sharing options...
Advertisement Posted May 13, 2014 Posted May 13, 2014 Hi AceVentura1986, Take a look here Stuck Pixel Column on M240?. I'm sure you'll find what you were looking for!
jaapv Posted May 13, 2014 Share #22 Posted May 13, 2014 Not that I'm aware of, but I am no LR expert by any definition. Link to post Share on other sites More sharing options...
pico Posted May 13, 2014 Share #23 Posted May 13, 2014 [...] I don't believe in this cosmic ray having an effect on sensors theory, especially Leica sensors Believe it, and it even happens 'on the shelf' at sea level. http://harvestimaging.com/pubdocs/090_2005_dec_IEDM_terrestrial_cosmic_rays.pdf From the paper: "The creation of hot spots is due to displacement damage in the silicon bulk. It is a typical silicon issue, independent of technology, architecture, sensor type or sensor vendor, and it can be observed in CCDs as well as in CMOS image sensors." Link to post Share on other sites More sharing options...
pico Posted May 13, 2014 Share #24 Posted May 13, 2014 Jaap, Quick follow up question, Is there any way to accomplish this in Lightroom? I generally don't even open photoshop for most projects, but stay in Lightroom. Thanks. I don't use LR, but one can create a 'droplet' in Photoshop which will patch known defective pixels or rows. This means you don't have to open Photoshop, and can drag and drop image files onto the droplet, one-by-one or a bunch at once. It's fast. (A little secret is that at least a few years ago I could put PS on a server and through a Windows batch command file, execute the droplet. I don't know if that would work today.) Link to post Share on other sites More sharing options...
3D-Kraft.com Posted May 13, 2014 Share #25 Posted May 13, 2014 I have seen a lot of threads here were M 240 users complained about dead pixel columns. In some cases they were only visible at certain ISO settings (e.g. at ISO 320 and 640, my one was affected as well, see here). Given the explanation from mjh, I wonder why this is still an issue with the CMOS sensor of the M 240. The only good news is, that Leica's QC seems to work better meanwhile. Link to post Share on other sites More sharing options...
jdlaing Posted May 13, 2014 Share #26 Posted May 13, 2014 Jaap, Quick follow up question, Is there any way to accomplish this in Lightroom? I generally don't even open photoshop for most projects, but stay in Lightroom. Thanks. Hotpixel Removal in Lightroom | Lumenatic Link to post Share on other sites More sharing options...
AceVentura1986 Posted May 13, 2014 Author Share #27 Posted May 13, 2014 Advertisement (gone after registration) jdlaing, Thanks, but that seems to be about Nikons and as I own Canons and Leicas, not applicable to me. Link to post Share on other sites More sharing options...
AceVentura1986 Posted May 13, 2014 Author Share #28 Posted May 13, 2014 I have seen a lot of threads here were M 240 users complained about dead pixel columns. In some cases they were only visible at certain ISO settings (e.g. at ISO 320 and 640, my one was affected as well, see here). Given the explanation from mjh, I wonder why this is still an issue with the CMOS sensor of the M 240. The only good news is, that Leica's QC seems to work better meanwhile. My issues were twofold, first and primarily was whether the M240 is affected. Second, which camera to take. The consensus seems to be that M240s should theoretically be less susceptible b/c of the way CMOS sensors output data, but they still have had problems, at least in the near past. It also seems that this might have been more of a QC issue. Frankly, Leica should have provided a way for users to map out dead columns. If this was a QC issue, then I'll probably upgrade but if this is on ongoing problem w/the M240, something I've never experienced with Canons, then Leica I may be done with Leica unless I can automate the process in Lightroom or Photoshop. Again, thanks to all. Link to post Share on other sites More sharing options...
jdlaing Posted May 13, 2014 Share #29 Posted May 13, 2014 Adobe Camera Raw removes them automatically. Link to post Share on other sites More sharing options...
jdlaing Posted May 13, 2014 Share #30 Posted May 13, 2014 jdlaing, Thanks, but that seems to be about Nikons and as I own Canons and Leicas, not applicable to me. It makes no difference what camera. The process is the same. Link to post Share on other sites More sharing options...
AceVentura1986 Posted May 14, 2014 Author Share #31 Posted May 14, 2014 It makes no difference what camera. The process is the same. Unless I missed something, the video seems to indicate that Lightroom removes stuck pixels in the camera that was used. It also speculated that the automatic removal might somehow be coded in the Nikon NEF file. Still, assuming it's not my issue is not one or even a few random stuck pixels as these are very easily removed in LR. My concern is a long, vertical column of stuck pixels which apparently cannot easily be removed in LR but would require an addition step in Photoshop. Unless I missed something. RV Link to post Share on other sites More sharing options...
jaapv Posted May 14, 2014 Share #32 Posted May 14, 2014 LR will do that with any camera. Link to post Share on other sites More sharing options...
3D-Kraft.com Posted May 14, 2014 Share #33 Posted May 14, 2014 Adobe Camera Raw removes them automatically. Not these column errors that I showed in my example. Link to post Share on other sites More sharing options...
AceVentura1986 Posted May 16, 2014 Author Share #34 Posted May 16, 2014 Used Adobe Camera Raw the other day and it did not remove the dead pixel column. If there is a way of doing this, I am missing it. Link to post Share on other sites More sharing options...
jaapv Posted May 17, 2014 Share #35 Posted May 17, 2014 It will remove a stuck pixel, but it will not remove a dead pixel row. You need Photoshop for that. Link to post Share on other sites More sharing options...
AceVentura1986 Posted May 17, 2014 Author Share #36 Posted May 17, 2014 Yes, exactly. Link to post Share on other sites More sharing options...
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