cidereye Posted February 1, 2011 Share #1 Posted February 1, 2011 Advertisement (gone after registration) Received Bo's excellent lens coder template today and coded three lenses but cannot get any of them to be recognised. Did the obvious and applied another layer using a sharpie and on my 28mm Elmarit filled in the screw slot but still no go. Even on a 50mm Nokton which is just one simple marking my M8 does not recognise it??? Anybody else ever have such a problem? Do you think there is a chance that the code reading on the lens mount is faulty even? Inspected the surface of it closely under light but cannot see any obvious defects with it. Link to post Share on other sites More sharing options...
Advertisement Posted February 1, 2011 Posted February 1, 2011 Hi cidereye, Take a look here Cannot Get Coded Lenses to Work ??. I'm sure you'll find what you were looking for!
stunsworth Posted February 1, 2011 Share #2 Posted February 1, 2011 Try another marker pen, not all all are opaque to IR light as used by the sensor. Also the position of the markings is critical. The coding device I tried has enough play in it to make the results unreliable. Link to post Share on other sites More sharing options...
wlaidlaw Posted February 1, 2011 Share #3 Posted February 1, 2011 I have found the Pentel Sharpie is the best. You need to double check the alignment of the coder with a factory coded lens. Mine is not quite perfect and I compensate by thickening the line from the line drawn with the thin end of the supplied coder pen on one side only with the Sharpie and lengthening the mark slightly. To some extent it is a bit trial and error. Also make sure that the red window on your M8 body is clean. A lint free cloth dampened with IPA works well to do this. Some lenses are easier than others. On the M8, the position of the framelines lever must match that expected for the lens code applied or the code will not pick up. Wilson Link to post Share on other sites More sharing options...
cidereye Posted February 1, 2011 Author Share #4 Posted February 1, 2011 Thanks for the advice, I'll try and get a Pentel tomorrow and see if that does the trick. Link to post Share on other sites More sharing options...
giordano Posted February 1, 2011 Share #5 Posted February 1, 2011 A lint free cloth dampened with IPA works well to do this. After a very good pub lunch today (the Half Moon at Plumpton), the letters IPA sent my brain in quite the wrong direction. Link to post Share on other sites More sharing options...
Want-a-leica Posted February 1, 2011 Share #6 Posted February 1, 2011 Received Bo's excellent lens coder template today and coded three lenses but cannot get any of them to be recognised. Did the obvious and applied another layer using a sharpie and on my 28mm Elmarit filled in the screw slot but still no go. Even on a 50mm Nokton which is just one simple marking my M8 does not recognise it??? Anybody else ever have such a problem? Do you think there is a chance that the code reading on the lens mount is faulty even? Inspected the surface of it closely under light but cannot see any obvious defects with it. There are a few of these coding kits around, it seems. From what I've read, doesn't sound like you'll actually damage the lens by using them, but I'd be nervous about dicking around with an expensive lens without really knowing what I was doing. People who've used coding kits, have you had any issues besides the coding not working? If it's just a matter of trial and error, I'll probably get one myself. Link to post Share on other sites More sharing options...
wlaidlaw Posted February 1, 2011 Share #7 Posted February 1, 2011 Advertisement (gone after registration) After a very good pub lunch today (the Half Moon at Plumpton), the letters IPA sent my brain in quite the wrong direction. You were about a mile from my house in South Chailey today. I will note the Half Moon now being good. It went downhill for a time. Wilson Link to post Share on other sites More sharing options...
wlaidlaw Posted February 1, 2011 Share #8 Posted February 1, 2011 There are a few of these coding kits around, it seems. From what I've read, doesn't sound like you'll actually damage the lens by using them, but I'd be nervous about dicking around with an expensive lens without really knowing what I was doing. People who've used coding kits, have you had any issues besides the coding not working? If it's just a matter of trial and error, I'll probably get one myself. The only issue is that some of the marking can rub off on the red sensor strip and occasionally will need cleaning off, as I mentioned above. IPA (Iso Propyl Alcohol not the beer) removes any marker residue from this area. On some Zeiss ZM lenses, you need to change the bayonet to get the coding to work. For example, the 21mm Biogon needs a 28/90 bayonet in place of the 24/35 it comes with. I keep hoping that Leica will update the M8 firmware to have manual lens entry like the M9 does. Wilson Link to post Share on other sites More sharing options...
ho_co Posted February 2, 2011 Share #9 Posted February 2, 2011 ... I keep hoping that Leica will update the M8 firmware to have manual lens entry like the M9 does. Would be nice but can't be done according to Stefan Daniel's M9 intro. Link to post Share on other sites More sharing options...
chris_livsey Posted February 2, 2011 Share #10 Posted February 2, 2011 But I remember when they said we couldn't have full frame Link to post Share on other sites More sharing options...
voe Posted February 3, 2011 Share #11 Posted February 3, 2011 Anybody else ever have such a problem? Do you think there is a chance that the code reading on the lens mount is faulty even? Inspected the surface of it closely under light but cannot see any obvious defects with it. I have the same problem with the same coder, I will give it another go with a Pentel Sharpie. Link to post Share on other sites More sharing options...
jaapv Posted February 3, 2011 Share #12 Posted February 3, 2011 Don't forget to switch on lens recognition... Link to post Share on other sites More sharing options...
k-hawinkler Posted February 3, 2011 Share #13 Posted February 3, 2011 Dumb question: How do you do that? I have an M9, never touched an M8. K-H. Link to post Share on other sites More sharing options...
wlaidlaw Posted February 3, 2011 Share #14 Posted February 3, 2011 Dumb question: How do you do that?I have an M9, never touched an M8. K-H. Usually where the menu opens. Wilson Link to post Share on other sites More sharing options...
Hammerhai Posted February 26, 2012 Share #15 Posted February 26, 2012 I have been having the same problem with my 50 and 28. Neither one are being recognized and will look into getting the Pentel. However, this leads me to another question: Do I really need to "code" my lenses at all? Seriously, does it make that much of a difference? Thanks and much appreciated! Link to post Share on other sites More sharing options...
wlaidlaw Posted February 26, 2012 Share #16 Posted February 26, 2012 Are you using an M8 or M9? If you are using an M8 with UV/IR filters, it will make a difference, particularly with the 28. The coding instructs the M8 to correct the coloured vignetting that you would get otherwise. The wider the lens, the more correction that is required, caused by the increasingly oblique angle which light rays pass through the interferential filter. It is also nice to have the lens focal length shown in the EXIF's. With the M9, on the 28mm it will correct for standard vignetting. If you look at the table below for the 28mm Summicron which I use, you will see that by the edge of the lens, at f2.0, there is a substantial light fall off of something over two stops. Wilson 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/143087-cannot-get-coded-lenses-to-work/?do=findComment&comment=1937649'>More sharing options...
Hammerhai Posted February 26, 2012 Share #17 Posted February 26, 2012 Thanks. It definitely looks like I need to get my 28 summicron recognized. I do have one fear though, that maybe my sensor is kaputt. Is there any easy way to test it without having to find a factory 6-bit coded lens to test with? I cleaned the sensor with IPA and it looks fine, but I don't have a point of reference to go by being new to M8's. Link to post Share on other sites More sharing options...
wlaidlaw Posted February 26, 2012 Share #18 Posted February 26, 2012 How near are you to a Leica dealer? They will test it for you with a coded lens and I would expect them to do this free of charge. The other option is to put a request in Barnack's Bar part of the forum, to try and find a nearby Leica Forum member, who has a coded lens, that he could try on your camera. I find that the sensor needs a clean from time to time with iso propyl alcohol, especially as a number of my lenses are hand coded (Zeiss 25 and 50, Leica 90/2.8 and 135/4) and the ink tends to rub off on the edge of the sensor. Wilson Link to post Share on other sites More sharing options...
Hammerhai Posted February 26, 2012 Share #19 Posted February 26, 2012 Hey Wilson. Thanks for the help and suggestions. Good news. They work! I rubbed the sensor again with IPA and made my dots fatter (although I had read not to do that) with a Pentel Sharpie and said a brief incantation to the Leica god and presto! I have now spent the entire day shooting and have yet to get my Lightroom program in the mail... Oh to be a Leica owner. Link to post Share on other sites More sharing options...
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