AlanG Posted August 2, 2010 Share #141 Posted August 2, 2010 Advertisement (gone after registration) The stats so far (taken from cracked S/N) if members dont mind:[ATTACH]214285[/ATTACH] This is a very small sample.... but if only a small percentage were defective in some way, I wonder why it takes an average of 214 days (after purchase) to crack? Too bad Richard Feynman isn't around any more. Link to post Share on other sites More sharing options...
Advertisement Posted August 2, 2010 Posted August 2, 2010 Hi AlanG, Take a look here Crack!. I'm sure you'll find what you were looking for!
lars_bergquist Posted August 2, 2010 Author Share #142 Posted August 2, 2010 Who was that Israeli who claimed he could bend spoons by will power alone? I am sure Richard Feynman would have been delighted, with his impish common sense, but the man to take on this phenomenon is clearly the Incredible James Randi. The old man from the Age When You Used Fingers to Bend Spoons Link to post Share on other sites More sharing options...
HetDraakje Posted August 2, 2010 Share #143 Posted August 2, 2010 Who was that Israeli who claimed he could bend spoons by will power alone? I Uri Geller Link to post Share on other sites More sharing options...
jaapv Posted August 2, 2010 Share #144 Posted August 2, 2010 This is a very small sample.... but if only a small percentage were defective in some way, I wonder why it takes an average of 214 days (after purchase) to crack? Too bad Richard Feynman isn't around any more.This is not a small sample. This is a considerable percentage of the number of cracked sensors. Link to post Share on other sites More sharing options...
eritho Posted August 2, 2010 Share #145 Posted August 2, 2010 This is not a small sample. This is a considerable percentage of the number of cracked sensors. What do we know? How many M9 owners are members in this forum? How many of all cracked sensors are reported to the forum? Do Kodak or Leica (with all their staff in R&D) really don't know what causes this crack? Will Leica prolong their warranty? And the most important to me: Will my sensor also crack some day before or after the warranty period SN 3835xxx? Link to post Share on other sites More sharing options...
jaapv Posted August 2, 2010 Share #146 Posted August 2, 2010 I know - take my word for it. The large majority of cracked sensors have been reported in the forum. The root cause of the crack is unknown, and Leica will, if past performance is any standard, prolong guaranty for it. Link to post Share on other sites More sharing options...
Guest malland Posted August 2, 2010 Share #147 Posted August 2, 2010 Advertisement (gone after registration) ...and Leica will, if past performance is any standard, prolong guaranty for it.That is my experience with Leica as well. —Mitch/Bangkok Shophouse Demolition Link to post Share on other sites More sharing options...
Baptiste Posted August 2, 2010 Share #148 Posted August 2, 2010 graph update... bottom point = purchase date for each individual, top point = cracking date. y-axis 0 line = sept 2009 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/126049-crack/?do=findComment&comment=1394058'>More sharing options...
Baptiste Posted August 2, 2010 Share #149 Posted August 2, 2010 As the latest purchased cracked camera has been purchased in january, and that its "life duration" seems to be in the average, I think that one has to wait something la 2/3 months to see if the issue has been resolved with the batches of feb-march and later. Link to post Share on other sites More sharing options...
jaapv Posted August 2, 2010 Share #150 Posted August 2, 2010 I think that graph shows that it as random as lightning strikes. Link to post Share on other sites More sharing options...
eritho Posted August 2, 2010 Share #151 Posted August 2, 2010 I think that graph shows that it as random as lightning strikes. It's random where lightening strikes! But, on the other hand, it only strikes when a thunderstorm is up;) Link to post Share on other sites More sharing options...
250swb Posted August 2, 2010 Share #152 Posted August 2, 2010 This is not a small sample. This is a considerable percentage of the number of cracked sensors. The number of M9's sold has to be many, many times the number of forum members on LUF. As such there are far more M9's out there that will have had the cracked sensor problem than the few reported here. And don't forget a good number of people will have been sending their camera back without even knowing they have had a cracked sensor, just reporting an anomoly on the images. Steve Link to post Share on other sites More sharing options...
jaapv Posted August 2, 2010 Share #153 Posted August 2, 2010 You will have to take my word for it, a large proportion has been reported on this forum. It is not a supposition on my side. I think the mechanism is that the "victims" google the problem and find this forum. There are a number of first posts in the thread. Strangely enough, not one crack is reported on RFF. Link to post Share on other sites More sharing options...
eritho Posted August 2, 2010 Share #154 Posted August 2, 2010 You will have to take my word for it, a large proportion has been reported on this forum. It is not a supposition on my side. I think the mechanism is that the "victims" google the problem and find this forum. There are a number of first posts in the thread. Strangely enough, not one crack is reported on RFF. And, as far as have seen, no one on DPR's Leica forum. Link to post Share on other sites More sharing options...
250swb Posted August 2, 2010 Share #155 Posted August 2, 2010 You will have to take my word for it, a large proportion has been reported on this forum. It is not a supposition on my side. I think the mechanism is that the "victims" google the problem and find this forum. There are a number of first posts in the thread. Strangely enough, not one crack is reported on RFF. Well OK, or is it LUF thats causing it? I mean, there's often a lot of reckless advice that people should just go out and use their camera's! Steve Link to post Share on other sites More sharing options...
jaapv Posted August 2, 2010 Share #156 Posted August 2, 2010 :D Unfortunately the cause is still unknown... Link to post Share on other sites More sharing options...
AlanG Posted August 2, 2010 Share #157 Posted August 2, 2010 This is not a small sample. This is a considerable percentage of the number of cracked sensors. I am not questioning this, nor the value of graphing this data, but it will only take a couple of additional cameras where the sensors cracked within a few days to alter the figures. 15-20 items in any survey is a numerically small sample when we don't know the overall population that it reflects. But from the reports I am intrigued by the process where the device is fine for a couple hundred days, and then cracks for no apparent reason. I can't get my head around what could cause this. My only thought is that repeated use over time causes some kind of stress fracture. I know this happens in metal, but I have no idea if this can happen in something like a cover glass - e.g. where there is a brittle substance and no flex involved. And for all we know, some sensors could crack immediately after manufacturing... busting this theory. If this survey goes on for a while that 214 day average holds consistently over time, it will be quite an issue. Link to post Share on other sites More sharing options...
Nicoleica Posted August 2, 2010 Share #158 Posted August 2, 2010 :D Unfortunately the cause is still unknown... My theory,( Which has nothing at all to do with a Brontosaurus.) is that Leica lenses are to blame. They project such a powerful and sharp image that mere glass cannot stand the shock. Link to post Share on other sites More sharing options...
jaapv Posted August 2, 2010 Share #159 Posted August 2, 2010 I am not questioning this, but it will only take a couple of additional cameras where the sensors cracked within a few days to alter the figures. And for all we know, some sensors could crack immediately after manufacturing. But I am intrigued by the process where the device is fine for a couple hundred days, and then cracks for no apparent reason. If this survey goes on for a while that 214 day average holds consistently over time, it will be quite an issue. I doubt that about 20 cameras on about (guess!) 20.000 made represents much of a valid statistical sample.The number of broken sensors is so small that it does not help much to do a statistical analysis imo. I have a feeling that the number of exposures would be more interesting than the age of the camera, btw. Link to post Share on other sites More sharing options...
AlanG Posted August 2, 2010 Share #160 Posted August 2, 2010 I doubt that about 20 cameras on about (guess!) 20.000 made represents much of a valid statistical sample.The number of broken sensors is so small that it does not help much to do a statistical analysis imo. I have a feeling that the number of exposures would be more interesting than the age of the camera, btw. Not to press the point too hard, but since these failures were self reported and not gathered via random surveying of owners, there is no way to tell what percentage of the overall population have cracked sensors. Since we don't know the process, it could be that 100 percent of the sensors will fail within 1000 days, or if your sensor doesn't fail within 400 days, it almost surely won't fail. Time will tell. Link to post Share on other sites More sharing options...
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