cookedart Posted November 1, 2009 Share #1 Posted November 1, 2009 Advertisement (gone after registration) Hey guys, I'm shooting with an M8 and don't have any Leica 6-bit coded lenses. I have, however, purchased a few second hand lenses that seem to be handcoded, and I have turned on Lens Detection + UV/IR, but am seeing nothing show up in the EXIF data in Bridge. I've contacted the original owners of the lenses to see if their hand coding worked with their lenses.. but I'm getting a tad paranoid that the 6-bit sensor might not even work on my m8 at all. I tried handcoding another lens myself and wasn't able to get it to work either (so it seems) Can anyone tell me what the behaviour is when a lens is properly identified? Does lens info show up in the "info" panel in image playback on the M? If the lens coding is correct, are there any easy "fixes" or remedies to fixing a 6 bit sensor? Cleaning perhaps? Link to post Share on other sites More sharing options...
Advertisement Posted November 1, 2009 Posted November 1, 2009 Hi cookedart, Take a look here Issue with 6-Bit Sensor on M8. I'm sure you'll find what you were looking for!
Guest roey Posted November 1, 2009 Share #2 Posted November 1, 2009 When I have a coded lens mounted I see the focal length in the info screen, right above the ISO. Do you know someone who owns a coded Leica lens? If so you might be able to try it out and eliminate/verify that it's the camera. Link to post Share on other sites More sharing options...
cookedart Posted November 1, 2009 Author Share #3 Posted November 1, 2009 When I have a coded lens mounted I see the focal length in the info screen, right above the ISO. Do you know someone who owns a coded Leica lens? If so you might be able to try it out and eliminate/verify that it's the camera. I don't, unfortunately... I suppose I could also order a coder kit and try that to verify. I don't actually care/mind about the software vignetting removal.. but the lens identification might be nice as well as knowing that the camera is operationally flawless in case I ever sell it. Link to post Share on other sites More sharing options...
Guest mc_k Posted November 1, 2009 Share #4 Posted November 1, 2009 Does happen apparently that the hand-coding doesn't work, or works intermittently, or some ink needs to be cleaned up. Link to post Share on other sites More sharing options...
Guest roey Posted November 1, 2009 Share #5 Posted November 1, 2009 I don't, unfortunately... I suppose I could also order a coder kit and try that to verify. Well, if that doesn't work you still don't know whether it is the camera or the kit. Another thing you can do is to go to a Leica dealer and ask whether you can try out one of their demo lenses. Link to post Share on other sites More sharing options...
cookedart Posted November 1, 2009 Author Share #6 Posted November 1, 2009 Well, if that doesn't work you still don't know whether it is the camera or the kit. Another thing you can do is to go to a Leica dealer and ask whether you can try out one of their demo lenses. I will probably try this sometime soon.. In order for this to work, I should have UV+IR lens detection on, and shoot a frame, and check the image in the review mode for the lens detection data? Link to post Share on other sites More sharing options...
Guest roey Posted November 1, 2009 Share #7 Posted November 1, 2009 Advertisement (gone after registration) In order for this to work, I should have UV+IR lens detection on, and shoot a frame, and check the image in the review mode for the lens detection data? Yes. Link to post Share on other sites More sharing options...
Nicoleica Posted November 1, 2009 Share #8 Posted November 1, 2009 Please ensure that you have the camera turned off when you change lenses though. Besides this being recommended in the manual, and important for reducing the chances of sensor contamination, I believe that the lens detection sensor only functions briefly as the camera is switched on. Link to post Share on other sites More sharing options...
cookedart Posted November 1, 2009 Author Share #9 Posted November 1, 2009 Please ensure that you have the camera turned off when you change lenses though. Besides this being recommended in the manual, and important for reducing the chances of sensor contamination, I believe that the lens detection sensor only functions briefly as the camera is switched on. Thanks, I'll be sure to watch out for that. Link to post Share on other sites More sharing options...
stunsworth Posted November 1, 2009 Share #10 Posted November 1, 2009 Please ensure that you have the camera turned off when you change lenses though I can't say I bother to do that. If the camera's on I leave it on, if it's off I leave it off. I understand the theoretical notion that electrostatic charge will attract dust to the sensor if the camera is switched on, but surely the shutter will prevent any dust from getting to the sensor when a lens is changed? Also what is the electrostatic charge on the sensor, and is it high enough to attract dust in the first place? Link to post Share on other sites More sharing options...
steamboat Posted November 2, 2009 Share #11 Posted November 2, 2009 When I bought a new M8.2 last year the 6-bit sensor did not work. Out of the box, brand new and it didn't work. My dealer called Leica (NJ) and they said to replace the camera. Which my dealer did immediately. I already had factory 6-bit coding (that had worked on a demo M8) so we knew that it was a problem with the camera. You need to get a factory 6-bit lens. That's the only way (I can think of ) to check it. Link to post Share on other sites More sharing options...
cookedart Posted November 2, 2009 Author Share #12 Posted November 2, 2009 I actually finally got around to trying out hand 6-bit coding again, this time with the 50mm CV 1.1 as a Noctilux.. I found out that this particular lens is super easy to code and lo and behold, it worked like a charm... I coded two other lenses today and it's all showing up in the EXIF data. I guess the original lens that I was trying to code was just more difficult to properly code - sorry to cause alarm! Thanks for all the ideas! Link to post Share on other sites More sharing options...
lanetomlane Posted November 2, 2009 Share #13 Posted November 2, 2009 Please ensure that you have the camera turned off when you change lenses though. Besides this being recommended in the manual, and important for reducing the chances of sensor contamination, I believe that the lens detection sensor only functions briefly as the camera is switched on. I never realised that, (but there again I'm a man and therefore don't do instruction books, or maps) and have been changing lens, without switching the camera off for years. It doesn't appear to have had any detrimental effect on the camera and the lens information appears on the image file. Should I be correcting my ways and working to the book? Anyone like to comment. ________________ Cheers, Tom Photography by Tom Lane Link to post Share on other sites More sharing options...
Nicoleica Posted November 2, 2009 Share #14 Posted November 2, 2009 My apologies to all. I have checked again, and there does not appear to be a specific mention regarding switching off the camera before changing lenses on the M8. However, I still believe that this is good practice to follow, as anything that reduces the chance of attracting dust onto the sensor cannot be a bad thing. (You can't trigger the shutter inadvertently either with the switch in the off position.) I still believe that the lens detection sensor only reads the lens data during power-up. Though this may occur if the camera is 'waking-up' too. Link to post Share on other sites More sharing options...
Shootist Posted November 2, 2009 Share #15 Posted November 2, 2009 Please ensure that you have the camera turned off when you change lenses though. Besides this being recommended in the manual, and important for reducing the chances of sensor contamination, I believe that the lens detection sensor only functions briefly as the camera is switched on. Although it is recommended to turn the camera off when changing lenses I have rarely if ever done that when changing lenses and always had the camera pick up the new lens. Hand coding is hit and miss. Bo Lorentzen make one of the best hand coding devices and it's only $5.00. He is a member of this forum and the link to his coder can be found, I think, in any of his posts. If not send him a PM through this forum and he will email you the link to purchase one. With that coder I have had no problem hand coding any of the lenses. Leica or other brand lenses, I have that are not factory coded. You really need to try a factory coded lens before you think the coding sensor on the camera is bad and you must make sure that lens is properly lock into the mount, IE not over or under turned in the mount. The coding, whether factory or hand, is on a curve and the sensor is straight so the lens must be properly lock in for it to work correctly. Link to post Share on other sites More sharing options...
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