tobey bilek Posted November 13, 2015 Share #1 Posted November 13, 2015 Advertisement (gone after registration) Has anyone had the problem? I don`t know if it is a CCD problem and CMOS will not have it or if is the way Leica reads the sensor output. Link to post Share on other sites More sharing options...
Advertisement Posted November 13, 2015 Posted November 13, 2015 Hi tobey bilek, Take a look here 240 and red pixel line. I'm sure you'll find what you were looking for!
jip Posted November 13, 2015 Share #2 Posted November 13, 2015 A red pixel line means its a fault that can be mapped out by Leica. Link to post Share on other sites More sharing options...
Schrödinger's cat Posted November 13, 2015 Share #3 Posted November 13, 2015 Has anyone had the problem? I don`t know if it is a CCD problem and CMOS will not have it or if is the way Leica reads the sensor output. Without a sample image I'm just guessing here. I'm also assuming you get the line in the vertical direction and at base ISO. Apologies if I didn't understand the question properly. A single bad pixel can result in the entire column being disrupted. The service center may simply edit the firmware to prevent that single pixel from being used. The results are undetectable in the finished image. In some cases the sensor requires replacement. I have read of people being able to cure the problem themselves by taking a large number of photographs, I believe with the lens cap on, at long exposures. Sorry, I didn't really pay too much attention to the exact procedure they claimed or the circumstances under which it was useful as I never had the problem. I suspect that you will simply have to send the camera in for service. Link to post Share on other sites More sharing options...
tobey bilek Posted November 13, 2015 Author Share #4 Posted November 13, 2015 I want to know if the problem exists with cmos sensor in 240. Simply put do any 240 users have the problem as I want to know before I buy one. Link to post Share on other sites More sharing options...
jdlaing Posted November 13, 2015 Share #5 Posted November 13, 2015 Every single sensor, no matter what kind, can have hot or dead pixels. They can be mapped out to a point. it seems to be reported a lot less for certain cameras, the M-240 being one of those. Link to post Share on other sites More sharing options...
Schrödinger's cat Posted November 13, 2015 Share #6 Posted November 13, 2015 I want to know if the problem exists with cmos sensor in 240. Simply put do any 240 users have the problem as I want to know before I buy one. Fair enough. I have never seen it personally on any of my own M240 images. I have never seen it personally on anyone else's M240 images. I do recall reading on dpreview about two individuals reporting such a malfunction on their M240, but don't have any more details than that. Based on nothing more than the number of internet posts I have read, I get the impression this issue was more commonly reported with the M9/M8 technology but not completely absent from the M240. Link to post Share on other sites More sharing options...
Berlinman Posted November 13, 2015 Share #7 Posted November 13, 2015 Advertisement (gone after registration) I had the problem with two M240 but not red lines - my lines were black. Leica had mapped the dead pixel. Link to post Share on other sites More sharing options...
jack-tucker Posted November 24, 2015 Share #8 Posted November 24, 2015 I was facing that problem with my M-P (240) after a few weeks after I bought it (new). It was mapped out by Leica CC. Link to post Share on other sites More sharing options...
jaapv Posted November 24, 2015 Share #9 Posted November 24, 2015 I want to know if the problem exists with cmos sensor in 240. Simply put do any 240 users have the problem as I want to know before I buy one. CMOS sensors are as prone to pixel damage as CCD sensors are. In fact, most scientific research into neutron strike damage has been done on CMOS sensors. Differences in visibilty of the damage are mostly caused by different types of sensor readout, in other words, a single pixel is less visible than a whole line caused by a single pixel. Link to post Share on other sites More sharing options...
Peter Kilmister Posted November 24, 2015 Share #10 Posted November 24, 2015 I have had my M 240-P for months and not a single problem. Before that I had the M 240 for months. No problems with that either. I sold the M 240 and the buyer has never complained. Maybe I've been lucky? Link to post Share on other sites More sharing options...
jaapv Posted November 24, 2015 Share #11 Posted November 24, 2015 No, it is not all that common. Link to post Share on other sites More sharing options...
jackk Posted December 3, 2015 Share #12 Posted December 3, 2015 My copy has at least 10 to 20 (can it be considered as tons?) hot pixels on OOC jpegs when shots were taken under ISO600. 800 and up no hot pixels.... go figure... I'm debating whether/not I should send the camera in (with the lenses for the rangefinder calibration as well since the 50 lux is back focusing at 20 feet and further) before the warranty expires, which is in 2 weeks.... I won't have the baby for all the X'mas/New Year events if I do so Off topic and not meant to hi-jack your post OP, but asking the question anyway Do any of you folks know whether/not Leica will charge a fee to map out dead pixels + calibration once warranty expires? Just wanna get an idea before I go to the store. Link to post Share on other sites More sharing options...
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