_Michael Posted July 29, 2019 Share #1 Posted July 29, 2019 Advertisement (gone after registration) Hi all, I have a bit of a weird problem and wondering if anyone has seen this or has any suggestions. I will be doing some additional testing as well, but here is the situation; I grabbed a few images with my 262 and 50mm Summicron v5. The lens has 6-bit coding on it. My past captures have correctly inserted the 50mm Summicron lens information in IPTC data. In this set of captures, the lens information says "Tri-Elmar-M 1:4/16-18-21 ASPH." instead of the proper (and previously recorded) "Summicron-M 1:2/50. Settings were turned to automatic detection. I cannot determine why this might have happened, and would prefer it not happen again. At this point my plan is to simply use manual settings. I just have to remember to make the changes. Any other suggestions? Has anyone seen this behavior? This body and my limited lens set has performed without issue to this point. Thanks in advance for any thoughts or suggestions Link to post Share on other sites More sharing options...
Advertisement Posted July 29, 2019 Posted July 29, 2019 Hi _Michael, Take a look here M262 - wrong lens model metadata inserted.. I'm sure you'll find what you were looking for!
Michael Geschlecht Posted July 30, 2019 Share #2 Posted July 30, 2019 Hello Michael, Welcome to the Forum, Have you checked to see that the code on the lens flange is still correct? Are the little enclosures still coded as they should be? If the information picked up by the sensors is inaccurate then the sensors will transfer that wrong information to the camera. Best Regards, Michael Link to post Share on other sites More sharing options...
a.noctilux Posted July 30, 2019 Share #3 Posted July 30, 2019 It's kind of one bit shift to the left. a - Maybe the lens is not correctly mounted with the body pin in the lens groove ? Summicron-M 50mm has code ... 100001 Tri-Elmar-M 16-18-21 has code .010000 b - Possible also, if the lens is correctly mounted and "clic". Or dirt in front of the coding sensor and/or the lens code markings to be cleaned Link to post Share on other sites More sharing options...
_Michael Posted July 30, 2019 Author Share #4 Posted July 30, 2019 1 hour ago, Michael Geschlecht said: Hello Michael, Welcome to the Forum, Have you checked to see that the code on the lens flange is still correct? Are the little enclosures still coded as they should be? If the information picked up by the sensors is inaccurate then the sensors will transfer that wrong information to the camera. Best Regards, Michael I looked at a chart of the codes, as well as the lens itself and the camera side connection. Everything seems correct. I will look again for sure. Thanks you Link to post Share on other sites More sharing options...
_Michael Posted July 30, 2019 Author Share #5 Posted July 30, 2019 38 minutes ago, a.noctilux said: It's kind of one bit shift to the left. a - Maybe the lens is not correctly mounted with the body pin in the lens groove Summicron-M 50mm has code ... 100001 Tri-Elmar-M 16-18-21 has code .010000 b - Possible also, if the lens is correctly mounted and "clic". Or dirt in front of the coding sensor and/or the lens code markings to be cleaned All good suggestions and it is interesting that this is one-bit difference. I believe the lens was properly mounted, but that is something I will pay extra attention to. Obviously a bit concerning if it was not. I will check the contacts and cleanliness again. Thank you Link to post Share on other sites More sharing options...
_Michael Posted July 30, 2019 Author Share #6 Posted July 30, 2019 Well, I have done some additional checking of all connections, code, etc. and everything seems to be good. I've also tested it again and I cannot explain why, but it appears to be working correctly at this time. Very strange. I will keep an eye on things and chase the issue if it appears again. Thanks! Link to post Share on other sites More sharing options...
microview Posted July 30, 2019 Share #7 Posted July 30, 2019 Advertisement (gone after registration) When I switch o my M262 I tend to press the info button showing mounted lens, battery and SD card status. If wrong lens showing I''d just remove and reclick (or look to see if 'manual' selected from a previous non-coded lens use)! Link to post Share on other sites More sharing options...
_Michael Posted July 30, 2019 Author Share #8 Posted July 30, 2019 8 hours ago, microview said: When I switch o my M262 I tend to press the info button showing mounted lens, battery and SD card status. If wrong lens showing I''d just remove and reclick (or look to see if 'manual' selected from a previous non-coded lens use)! Good tip. Thanks. It appeared I had the setting right, but obviously something was not. I also must have missed that the info button shows the lens attached. I will look for that. Cheers Link to post Share on other sites More sharing options...
jaeger Posted August 1, 2019 Share #9 Posted August 1, 2019 I have never stopped hearing funny things about Leica... Link to post Share on other sites More sharing options...
a.noctilux Posted August 1, 2019 Share #10 Posted August 1, 2019 (edited) 8 hours ago, jaeger said: I have never stopped hearing funny things about Leica... I bet, it's not the last one 😇 Since I use Leica, some "funny" (not so when those arrived) things happened all the time. I think I'm not the only one, eh. Live is "funny" or "boring" or what else depending on how we see/look (at) it. Edited August 1, 2019 by a.noctilux Link to post Share on other sites More sharing options...
sblutter Posted August 1, 2019 Share #11 Posted August 1, 2019 Why bother with coding, it doesn't have any effect on DNG's. I turned it off. I shoot primarily for print and do a lot of PP, then make jpg's from 'finals' for online galleries Link to post Share on other sites More sharing options...
jaapv Posted August 1, 2019 Share #12 Posted August 1, 2019 If you inadvertently press the release button when mounting the lens, it may well be seated incorrectly. Link to post Share on other sites More sharing options...
a.noctilux Posted August 1, 2019 Share #13 Posted August 1, 2019 1 hour ago, sblutter said: Why bother with coding, it doesn't have any effect on DNG's. I turned it off. I shoot primarily for print and do a lot of PP, then make jpg's from 'finals' for online galleries I see some changes with some lenses in DNG files with coded and non coded lenses. As I have more lenses without coding than with, I wanted to "know in my use", what are the impacts of this in my DNG files. So I experimented with non coded lens with manuel setting to tell the body which lens is mounted, then for comparing purpose, turned the "coding off" with same lens in DNG of course. With many lenses in the wide and open wide, the changes are visible in vignetting and even some cured the "magenta/red edge" with wider lenses. With 50mm upward, only Noctilux 1.0 can have it's profound vignetting corrected to less profound when I tell the M it's 1.0 Noctilux. Other 50mm, I barely (if not) see some changes in the two DNG "coded" and "non coded". The other that benefits from coding is Summilux-M 75mm, in vignetting like the Nocti. Link to post Share on other sites More sharing options...
jaapv Posted August 2, 2019 Share #14 Posted August 2, 2019 Maybe, but simple vignetting is just about the easiest thing to control in postprocessing. Link to post Share on other sites More sharing options...
jaeger Posted August 2, 2019 Share #15 Posted August 2, 2019 On 8/1/2019 at 1:46 AM, a.noctilux said: Live is "funny" or "boring" or what else depending on how we see/look (at) it. Seriously I wouldn't feel bored if the M stop having problems. May I wish you have more fun? lol Link to post Share on other sites More sharing options...
_Michael Posted August 4, 2019 Author Share #16 Posted August 4, 2019 On 8/1/2019 at 8:58 AM, sblutter said: Why bother with coding, it doesn't have any effect on DNG's. I turned it off. I shoot primarily for print and do a lot of PP, then make jpg's from 'finals' for online galleries I like to have it as searchable metadata. Sometimes for a specific purpose, sometimes for curiosity, sometimes just for whatever. I fully understand it has no effect on DNG files, but like many other bits of data I think it has a place. Link to post Share on other sites More sharing options...
_Michael Posted August 4, 2019 Author Share #17 Posted August 4, 2019 On 8/1/2019 at 9:16 AM, jaapv said: If you inadvertently press the release button when mounting the lens, it may well be seated incorrectly. That is pretty much what I’ve settled on. I’ve grabbed a bunch if images since this and it works as expected. Link to post Share on other sites More sharing options...
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