msshea Posted March 6, 2014 Share #1 Posted March 6, 2014 Advertisement (gone after registration) Hi All, I just purchased a used Zeiss Biogon 25 f/2.8. All images look fine in Lightroom and the f stops are displayed in the Develop module (the previous owner placed dots on the lens mount with a black pen). But the camera displays "Attention No Lens Connected" when I turn on my M240 and LiveView doesn't function. No problems when using my Biogon 35 f/2 or Leica 90 Elmarit. Thanks in advance for any ideas, Merrill Link to post Share on other sites More sharing options...
Advertisement Posted March 6, 2014 Posted March 6, 2014 Hi msshea, Take a look here Zeiss 25mm not detected in LiveView. I'm sure you'll find what you were looking for!
AlanJW Posted March 6, 2014 Share #2 Posted March 6, 2014 Hi All, I just purchased a used Zeiss Biogon 25 f/2.8. All images look fine in Lightroom and the f stops are displayed in the Develop module (the previous owner placed dots on the lens mount with a black pen). But the camera displays "Attention No Lens Connected" when I turn on my M240 and LiveView doesn't function. No problems when using my Biogon 35 f/2 or Leica 90 Elmarit. Thanks in advance for any ideas, Merrill I am assuming the 6 bit dots have worn and are not communicating. Link to post Share on other sites More sharing options...
DMJ Posted March 6, 2014 Share #3 Posted March 6, 2014 Mine works fine, as in no warning. If I leave it in automatic lens detection then pressing 'info' button shows no information but no problem with live view. Try manually selecting nearest Leica equivalent in menu but remember to change it when switching away from this lens. Link to post Share on other sites More sharing options...
msshea Posted March 6, 2014 Author Share #4 Posted March 6, 2014 In fact, the Biogon 25 only has three dots (f stops are indicated in Lightroom). My Biogon 35 has no dots and I'm able to use LiveView with no problem. I'm thinking the presence or absence of dots has nothing to do with the camera detecting the lens. Merrill Link to post Share on other sites More sharing options...
msshea Posted March 6, 2014 Author Share #5 Posted March 6, 2014 I can switch off Lens Detection and still access LiveView with my Biogon 35. Merrill Link to post Share on other sites More sharing options...
msshea Posted March 7, 2014 Author Share #6 Posted March 7, 2014 I've finally gotten LiveView to work by turning on the camera, then unlocking the lens and rotating it a few times with the LiveView button pressed. The LCD usually comes alive after a couple of rotations. Not ideal, but at least it works. Thanks guys, Merrill Link to post Share on other sites More sharing options...
tobey bilek Posted March 7, 2014 Share #7 Posted March 7, 2014 Advertisement (gone after registration) It has been written M requires more precise marking compared to previous and has to activate the correct frames Link to post Share on other sites More sharing options...
CVickery Posted March 7, 2014 Share #8 Posted March 7, 2014 I didn't have issue only marking the black pits with my M9, but I found that my M needed the white pits painted as well to detect a lens reliably, so I'm convinced that the M is more sensitive to the quality of the coding. Link to post Share on other sites More sharing options...
CheshireCat Posted March 7, 2014 Share #9 Posted March 7, 2014 But the camera displays "Attention No Lens Connected" when I turn on my M240 and LiveView doesn't function. Seems the clueless firmware guys implemented yet another anti-feature. In any case, I don't think lens coding has anything to do here, otherwise half of my lenses would give the same error. Maybe a framelines detection problem is triggering this behavior. Link to post Share on other sites More sharing options...
250swb Posted March 7, 2014 Share #10 Posted March 7, 2014 I've finally gotten LiveView to work by turning on the camera, then unlocking the lens and rotating it a few times with the LiveView button pressed. The LCD usually comes alive after a couple of rotations. Not ideal, but at least it works. Thanks guys, Merrill Just an idea. Is the original problem the age old Leica 'problem' of you keeping your finger pressed on the lens button while mounting it, which can allow it to go over centre (rotate beyond the lock) on the mount? If so let the lens click into place and don't touch the release button. Steve Link to post Share on other sites More sharing options...
Dannybuoy Posted March 7, 2014 Share #11 Posted March 7, 2014 I have this 'feature' activated by my Konica M-Hexanon lenses from time to time. It seems the mounts aren't manufactured to the same tolerances as Leica lenses and they don't locate quite as well. I have to give it a few twists and retries to get LV to work. It's a bit of a pain in the ass but it's a 1st world problem I guess ;-) Link to post Share on other sites More sharing options...
jaapv Posted March 7, 2014 Share #12 Posted March 7, 2014 Seems the clueless firmware guys implemented yet another anti-feature..I don’t think a mechanical mismatch has anything to do with firmware….If so, let’s fix the misalignment of the Zeiss viewfinder at the same time. Link to post Share on other sites More sharing options...
Keith (M) Posted March 7, 2014 Share #13 Posted March 7, 2014 An odd problem. I have the ZM 21mm Biogon, 35mm Biogon f2, 50mm Planar f2 and 50mm C-Sonnar f1.5, all of which work perfectly with LV and EVF. I was under the impression that the "No Lens Connected" error message is usually triggered by a LTM lens that has an M bayonet adaptor with the cut-out, thus exposing the sensor window. Link to post Share on other sites More sharing options...
thighslapper Posted March 7, 2014 Share #14 Posted March 7, 2014 It has been written M requires more precise marking compared to previous and has to activate the correct frames It's not the markings ..... it's the frame actuating lever that is pushed by the flange extension ..... which has different lengths depending on the 3 frame pairs. For some reason on the M it is much more critical of minor errors ... and why fiddling with the degree of rotation often helps..... Link to post Share on other sites More sharing options...
UliWer Posted March 7, 2014 Share #15 Posted March 7, 2014 If the led-patch on the bayonet is not completely covered, live-view will not work - even if lens detection is switched off. The problem has often been discussed for usage of LTM-lenses with adapters on the M240. Most of thoese adapters have a spareout exactly at the place of the led-patch, so you cannot use live-view. With other lenses which don't exactly cover this patch you may have the same problem. It might work if you cover the patch by some black tape. Link to post Share on other sites More sharing options...
thighslapper Posted March 7, 2014 Share #16 Posted March 7, 2014 In coding my Zeiss Planar 50/2 I have indadvertently brought up 21/4 on auto lens recognition ...... which is a bit odd as it doesn't appear on any of the lists of 6 bit codes or in the manual choice list ..... and the Super Angulon 21/4 has always been regarded as unusable on the M9 etc ...... I assume it's 110011 ...... as 5/02 is 100001 ..... and after some narrowing of the temporary mark on the left showed 75/1.4 which is 100011. Unfortunately I was so pi**ed off that I'd got the coding positions wrong that I didn't take a photo to see what was in the exif info..... Curious .... Link to post Share on other sites More sharing options...
CheshireCat Posted March 8, 2014 Share #17 Posted March 8, 2014 I don’t think a mechanical mismatch has anything to do with firmware….If so, let’s fix the misalignment of the Zeiss viewfinder at the same time. I should be free to use Live View using a coke bottle instead of a lens, just because I feel like to. I don't think a coke bottle will mechanically match the M mount, therefore this nonsense firmware is limiting my artistic freedom. This is yet another anti-feature. Probably, a paranoid attempt to compensate for the lack of dust removal technology (that even El-Cheapo cameras have got). Only idiots would shoot without a lens, but Leica seems to think we are all a bunch of idiots. Link to post Share on other sites More sharing options...
pop Posted March 8, 2014 Share #18 Posted March 8, 2014 I should be free to use Live View using a coke bottle instead of a lens, just because I feel like to. I don't think a coke bottle will mechanically match the M mount, therefore this nonsense firmware is limiting my artistic freedom. This is yet another anti-feature. Probably, a paranoid attempt to compensate for the lack of dust removal technology (that even El-Cheapo cameras have got). Only idiots would shoot without a lens, but Leica seems to think we are all a bunch of idiots. I take it, then, that the design decision, not to activate live view without any lens attached, is not to your liking? Link to post Share on other sites More sharing options...
jaapv Posted March 8, 2014 Share #19 Posted March 8, 2014 Only idiots would shoot without a lens But you would like to be able to do so…. Link to post Share on other sites More sharing options...
swamiji Posted March 8, 2014 Share #20 Posted March 8, 2014 I figure it's a nice anti-dust feature, while changing lenses when I forget to turn off live-view. Link to post Share on other sites More sharing options...
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