sandro Posted May 3 Share #1 Posted May 3 (edited) Advertisement (gone after registration) My rather new M11 (I bought it almost two months ago) can detect several of my older lenses, even though they do not have any coding. I noticed this only last week when I took my Summicron-M 2/50mm (4th version from 1986) and my Tele-Elmarit-M 2.8/90mm (from 1984) on a trip. When I put these lenses on the camera the display correctly stated 2/50 and 2.8/90mm. How is that possible without these lenses being coded? Lex Edited May 3 by sandro Link to post Share on other sites More sharing options...
Advertisement Posted May 3 Posted May 3 Hi sandro, Take a look here M11 lens detection. I'm sure you'll find what you were looking for!
jdlaing Posted May 3 Share #2 Posted May 3 5 hours ago, sandro said: My rather new M11 (I bought it almost two months ago) can detect several of my older lenses, even though they do not have any coding. I noticed this only last week when I took my Summicron-M 2/50mm (4th version from 1986) and my Tele-Elmarit-M 2.8/90mm (from 1984) on a trip. When I put these lenses on the camera the display correctly stated 2/50 and 2.8/90mm. How is that possible without these lenses being coded? Lex It’s a new feature that has been kept under wraps. Lens Telepathy. 2 Link to post Share on other sites More sharing options...
pedaes Posted May 3 Share #3 Posted May 3 5 hours ago, sandro said: How is that possible without these lenses being coded? Well, you know it isn't. For uncoded lenses the camera will use last manual lens input if a new code is not entered.. Does this give us a clue? Link to post Share on other sites More sharing options...
lct Posted May 3 Share #4 Posted May 3 Could be that you have 2 or more user profiles saved in the camera. Each of them will ID your uncoded lenses as if they were the last lens manually coded. Link to post Share on other sites More sharing options...
sandro Posted May 4 Author Share #5 Posted May 4 I only have one user profile, the default one, since I haven't made any profile so far. I checker if the camera changes to another user profile by itself, but it doesn't. The other suggestion doesn't always work either. I first put the 2/35 Summicron (I erroneously called it 2/50 in my initial post but I did mean the 2/35mm) on the camera which then correctly stated 2/35mm. When I then changed it for the Tele-Elmarit-M 2.8/90mm it kept saying 2/35. I changed it manually, changed back to the 35mm Summicron and the camera said 2/35. When I then mounted the Tele-Elmarit-M again it correctly stated 2/90. So this is still something of a mystery for me. Lex Link to post Share on other sites More sharing options...
lct Posted May 4 Share #6 Posted May 4 2/50? 2/35? 2/90? 2.8/90? Not clear which is which and which is coded or not sorry. I'm pretty sure there is a simple explanation, but i may be wrong as often... Link to post Share on other sites More sharing options...
pedaes Posted May 4 Share #7 Posted May 4 Advertisement (gone after registration) 3 hours ago, sandro said: stated 2/90. Yes, because the camera remembers the last manually input code and applies it to any un-coded lens when next mounted. Suggest you understand how lens coding works for lenses without a 6-bit code. Link to post Share on other sites More sharing options...
sandro Posted May 4 Author Share #8 Posted May 4 Apology for my typos. I am speaking about two lenses here. The Summicron-M 2/35mm is not coded, nor is the Tele-Elmarit-M 2.8/90mm. I was trying to explain that what Pedaes suggested is not so in all cases. I first put the 2/35 Summicron-M on the camera which then correctly stated 2/35mm. When I then changed it for the Tele-Elmarit-M 2.8/90mm it kept saying 2/35. I changed it manually in the camera to 2.8/90, then changed back to the 35mm Summicron and the camera said 2/35. So it didn't get back to the last uncoded lens I used! When I then mounted the Tele-Elmarit-M again it correctly stated 2/90, and it didn't refer to the previously used lens, which was the 2/35mm. So I am interested, Pedaes, what I should learn to "understand how lens coding works for lenses without a 6-bit code". I am very much aware of the manual way to select a lens, and I have edited my list of codes to be used for all my uncoded lenses to be selected manually. Lex Link to post Share on other sites More sharing options...
lct Posted May 4 Share #9 Posted May 4 7 minutes ago, sandro said: When I then mounted the Tele-Elmarit-M again it correctly stated 2/90 It did not. The T-E is a 90/2.8 lens. Just trying to understand 😎 Link to post Share on other sites More sharing options...
lct Posted May 4 Share #10 Posted May 4 (edited) 19 minutes ago, sandro said: I first put the 2/35 Summicron-M on the camera which then correctly stated 2/35mm. The camera had no reason to do it except if you selected the 35/2 profile manually before that. Did you do it? If so, this should be your first step, right? Again trying to understand 😎 Edited May 4 by lct Link to post Share on other sites More sharing options...
pedaes Posted May 4 Share #11 Posted May 4 38 minutes ago, sandro said: what I should learn How the camera retains the last used manual code, and that you have to re-enter a code if this code will not be correct for the lens you are mounting. Link to post Share on other sites More sharing options...
sandro Posted May 5 Author Share #12 Posted May 5 I don't find that the camera retains the last used manual code. Just tried again: I put the Tele-Elmarit-M 2.8/90mm on the camera and it correctly states 2.8/90. Then I put the Summicron-M 2/35mm on the camera and it correctly states 2/35. Also when I change to the new and coded Summilux-M 1.4/50mm ASPH is of course states 1.4/50. After that the camera seems to somehow recognize the Summicron-M 2/35mm and again states 2/35, and the same with the Tele-Elmarit-M 2.8/90mm which it identifies correctly as 2.8/90. So I still don't understand how the M11 identifies these uncoded lenses, since it isn't simply that the camera returns to the code I have manually entered as the last one. I will try with other lenses as well. Lex Link to post Share on other sites More sharing options...
jaapv Posted May 5 Share #13 Posted May 5 Because the Tele Elmarit happens to have a screw in the right position and the camera remembers the “only” uncoded lens. Link to post Share on other sites More sharing options...
sandro Posted May 5 Author Share #14 Posted May 5 So that's it? Thanks Jaap. Probably other lenses do not have a screw in the right position. Lex Link to post Share on other sites More sharing options...
lct Posted May 5 Share #15 Posted May 5 (edited) Normal for the coded Summilux 50, normal for the uncoded Summicron 35 because you selected its profile manually, not normal for the uncoded Tele-Elmarit but as suggested by @jaapv, you may wish to check if there is a screw head in the way of the 6-bit sensor. Edited May 5 by lct Link to post Share on other sites More sharing options...
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