furcafe Posted March 31, 2013 Share #1 Posted March 31, 2013 Advertisement (gone after registration) I've noticed a glitch with the "Automatic Lens Detection" on my new M (Typ 240) when my coded 28-35-50 Tri-Elmar. Although the camera recognizes when the lens is set to 28mm or 35mm, both in the framelines & on Info (confirmed when taking test shots in EXIF), it does not recognize the 50mm in EXIF/Info, though the correct framelines do show up. Never experienced this w/my M9. Not sure if anyone else has encountered this problem, but would welcome any confirmation from other M240/Tri-Elmar users. Link to post Share on other sites More sharing options...
Advertisement Posted March 31, 2013 Posted March 31, 2013 Hi furcafe, Take a look here Auto Lens Detection Glitch w/28-35-50 Tri-Elmar. I'm sure you'll find what you were looking for!
Ecar Posted March 31, 2013 Share #2 Posted March 31, 2013 All three focal lengths are perfectly detected on my camera. Which version of the MATE are you using? Are you 100% sure the 50mm position was locked in? Did you try turning the lens a little bit in both directions when mounted (you may sometimes inadvertently over-rotate the lens mount on the camera flange)? 1 Link to post Share on other sites More sharing options...
marknorton Posted March 31, 2013 Share #3 Posted March 31, 2013 I have both versions of the lens and my M240 reports the selected focal length correctly. Link to post Share on other sites More sharing options...
Rick Posted March 31, 2013 Share #4 Posted March 31, 2013 Mark - When I attach an LTM lens to the M with an adapter it correctly choses the frame lines from the LTM to M adapter plate I choose. I can take pictures just fine using the RF. But, when I select LV I get a blacked out screen and the message: Attention No lens connected. Will the LTM-M adapters have to coded to the R-M adapter code now? Rick Link to post Share on other sites More sharing options...
furcafe Posted March 31, 2013 Author Share #5 Posted March 31, 2013 (edited) I did try wiggling the lens both directions (the mount is tighter on my 240 than on my previous M8 & M9), but will experiment further to see if the problem persists. Strange that the camera "knows" about the framelines, yet can't finish the communication for EXIF if the optical reader is a little off. I have model 11625 of the MATE. Thanks for another data point. All three focal lengths are perfectly detected on my camera.Which version of the MATE are you using? Are you 100% sure the 50mm position was locked in? Did you try turning the lens a little bit in both directions when mounted (you may sometimes inadvertently over-rotate the lens mount on the camera flange)? Edited March 31, 2013 by furcafe Link to post Share on other sites More sharing options...
furcafe Posted March 31, 2013 Author Share #6 Posted March 31, 2013 (edited) Update: You are correct! The camera does detect the 50mm in EXIF when I tighten the lens after it "clicks" into place. Unfortunately, it doesn't stay @ 50mm permanently; even working the focus tab vigorously will change it back to 35mm (framelines are still correct, though). At least I know what is causing the problem, though I doubt it's worth sending the camera &/or lens to NJ to get fixed. Thanks again, Chris I did try wiggling the lens both directions (the mount is tighter on my 240 than on my previous M8 & M9), but will experiment further to see if the problem persists. Strange that the camera "knows" about the framelines, yet can't finish the communication for EXIF. I have model 11625 of the MATE. Thanks for another data point. Edited March 31, 2013 by furcafe 1 Link to post Share on other sites More sharing options...
marknorton Posted April 1, 2013 Share #7 Posted April 1, 2013 Advertisement (gone after registration) If there's one thing you should not do with the Tri-Elmar is work anything vigorously, especially not the focal length ring. The mount is, by Leica standards, extremely fragile and all depends on tiny nylon rollers running in channels milled into the lens barrel. A rebuild costs upwards of €400. Rick, the camera tries to detect a lens present before going into Live View, the goal being to avoid the sensor being exposed with no lens attached. With no lens attached, the lens detector sees all black and it's this which triggers the no lens attached message. Try covering at least one of the lens sensor elements with a reflective surface. Strangely, my Novoflex lens adapters work even though they are painted black. It seems they are reflective to IR. 2 Link to post Share on other sites More sharing options...
furcafe Posted April 1, 2013 Author Share #8 Posted April 1, 2013 Good to know, though I've never worked the focal length selector very hard. Can't say I've exercised much care in using the focus tab, but will keep the Tri-Elmar's fragility in mind from now on. If there's one thing you should not do with the Tri-Elmar is work anything vigorously, especially not the focal length ring. The mount is, by Leica standards, extremely fragile and all depends on tiny nylon rollers running in channels milled into the lens barrel. A rebuild costs upwards of €400. Link to post Share on other sites More sharing options...
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