A. Cheng Posted October 7, 2010 Share #1 Posted October 7, 2010 Advertisement (gone after registration) It only calls up 50/75 framelines but the image captured is actually 35, I believe (by manually selecting the 35 frameline after the shot to compare the image). Is it normal for such old lens or something wrong with it? Thanks for advice how to solve this problem. Link to post Share on other sites More sharing options...
Advertisement Posted October 7, 2010 Posted October 7, 2010 Hi A. Cheng, Take a look here Summaron 3.5cm f3.5 doesn't call up 35 frameline on my M8. I'm sure you'll find what you were looking for!
Nicoleica Posted October 7, 2010 Share #2 Posted October 7, 2010 If your Summaron is a screw-mount lens, with an adaptor to M mount, then you probably have a 50mm adaptor instead of a 35mm one. Link to post Share on other sites More sharing options...
A. Cheng Posted October 7, 2010 Author Share #3 Posted October 7, 2010 Thanks, Nicole. My Summaron is M mount. I just bought this lens. The serial number is 1150xxx. Link to post Share on other sites More sharing options...
Nicoleica Posted October 7, 2010 Share #4 Posted October 7, 2010 Sorry that I wasn't of much help. Hopefully someone who has a better idea, or who may have one of these lenses, will answer soon. Link to post Share on other sites More sharing options...
bill Posted October 7, 2010 Share #5 Posted October 7, 2010 Well, Nicole is in all probability right. Your lens is a screwmount; the bayonet mount started at 1435001. Regards, Bill Link to post Share on other sites More sharing options...
Xmas Posted October 7, 2010 Share #6 Posted October 7, 2010 Hi If it is an M3 summaron it needs googles, then the 5cm frame line is to be used, on some the goggles are detachable, you must mount them to focus the lens properly. Noel Link to post Share on other sites More sharing options...
giordano Posted October 7, 2010 Share #7 Posted October 7, 2010 Advertisement (gone after registration) This sounds like one of the very earliest bayonet mount Summarons, before the M2 and its built-in 35mm viewfinder and before even the "goggled" version. You could check this on line: there are a couple of internet sites with lists of Leica lens serial numbers If so, it can be modified to bring up the 35mm framelines by filing the lug on the bayonet that contacts the focal length sensor in the lens mount ... but I guess that would destroy any value it might have to a collector. Link to post Share on other sites More sharing options...
bill Posted October 7, 2010 Share #8 Posted October 7, 2010 I have checked the serial numbers. See above. Regards, Bill Link to post Share on other sites More sharing options...
luigi bertolotti Posted October 7, 2010 Share #9 Posted October 7, 2010 Giordano is right... the very first BM Summaron 3,5 was made for M3 with external viewfinder----> 35mm frame did not exist yet------> 50 frame on any Leica M. Btw, Summarons 3,5 "M2 version", which activate 35 frame, are rather rare... 2,8 are easier to be found (and a better lens too). The goggled items are rather common and do correct framing onto M8 (50 frame - enlarged). Link to post Share on other sites More sharing options...
UliWer Posted October 7, 2010 Share #10 Posted October 7, 2010 Thanks, Nicole. My Summaron is M mount. I just bought this lens. The serial number is 1150xxx. With this serial number it can't be a lens originally produced with a bayonet. Perhaps the adapter is sticking very tight on the lens, or it was changed later with a bayonet which was not meant for 35mm (probably a bayonet for the M3, which had no such frames). Can you show a photo of the bayonet, so one can see? Link to post Share on other sites More sharing options...
luigi bertolotti Posted October 7, 2010 Share #11 Posted October 7, 2010 With this serial number it can't be a lens originally produced with a bayonet. Perhaps the adapter is sticking very tight on the lens, or it was changed later with a bayonet which was not meant for 35mm (probably a bayonet for the M3, which had no such frames). Can you show a photo of the bayonet, so one can see? Are you sure ? In theory is from 1954, the "year of M3"... and Summicrons 50 BM exist even under 1.000.000... maybe has a "factory fitted" BM adapter (which is different from the following "commercial" adapters). Btw, I have a lens like this 1.180.xxx, in BM. Link to post Share on other sites More sharing options...
bill Posted October 7, 2010 Share #12 Posted October 7, 2010 I checked the Pocket Book. See above. Regards, Bill Link to post Share on other sites More sharing options...
UliWer Posted October 7, 2010 Share #13 Posted October 7, 2010 Are you sure ? In theory is from 1954, the "year of M3"... and Summicrons 50 BM exist even under 1.000.000... maybe has a "factory fitted" BM adapter (which is different from the following "commercial" adapters). Btw, I have a lens like this 1.180.xxx, in BM. Is your 1.180.xxx one without goggles? Link to post Share on other sites More sharing options...
A. Cheng Posted October 7, 2010 Author Share #14 Posted October 7, 2010 Thanks everybody. Here's a picture hopefully clear enough for you to spot the screw threads inside the mount. Is it a proof of modification from screw to M mount? I checked with magnifier (old eyes, sigh) but could not see any sticking joint. The mount just looks being a part of the lens' base where marks the DOF scale. 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/133373-summaron-35cm-f35-doesnt-call-up-35-frameline-on-my-m8/?do=findComment&comment=1465002'>More sharing options...
UliWer Posted October 7, 2010 Share #15 Posted October 7, 2010 If Thiele's list about Leica lenses is right - which is not guaranteed - all 3.5 Summarons from 1.148.001 to 1.151.000 should be in screw mount. He only lists "a few" in the batch of 1220.001 to 1223.000 as M-Mount and only from 1435.000 there is a batch with most of them M, a part with goggles and some screw mounts. On the photo you can see the screw-mount insde the bayonet , which was not unusal at this time. So maybe it was an early - yet unlisted - M-mount or it got a bayonet later, obviously in the Leica factory. P.S: I dont recommend to do this, but you could remove the bayonet and add a proper adapter, which shows the frames for 35mm. Though you wouldn't have the DOF-scale any more. Best way to use it would be like the early adopters of a 35mm-lens on a M3 - guessing the right frames, which may work with some practice, or use an additional viewfinder for 35mm. Link to post Share on other sites More sharing options...
Nicoleica Posted October 7, 2010 Share #16 Posted October 7, 2010 Best way to use it would be like the early adopters of a 35mm-lens on a M3 - guessing the right frames, which may work with some practice, or use an additional viewfinder for 35mm. Or...... You could just use the preview lever when composing. Link to post Share on other sites More sharing options...
UliWer Posted October 7, 2010 Share #17 Posted October 7, 2010 Or...... You could just use the preview lever when composing. Yes, works well. I did this when I used a 28 Summaron and hadn't got the right adapter. Though I gave it up and got a proper adapter - after reading in a thread lately that common opinion was the lever is useless. Link to post Share on other sites More sharing options...
Nicoleica Posted October 7, 2010 Share #18 Posted October 7, 2010 I wonder if the original purpose of the preview lever was to allow for screw-mount/early bayonet lenses that didn't bring up the correct frames. Link to post Share on other sites More sharing options...
luigi bertolotti Posted October 7, 2010 Share #19 Posted October 7, 2010 Is your 1.180.xxx one without goggles? Yes 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! And the mount looks identical to the one depicted above by Cheng : only difference is the scale (feet in my item) and the small triangle at focus point, which in my one is not black (but can have lost its paint...); the tiny holes on the mount' surface are identical, same positions. I am not sure there is a factory-fitted BM adapter... it must be noticed that the last Summaron 3,5 in screw mount (E39 filter) is DIFFERENT from this... the distance scale is not tapered, but on a vertical surface, like in the last Summaron 3,5 in BM (the M2 version) Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! And the mount looks identical to the one depicted above by Cheng : only difference is the scale (feet in my item) and the small triangle at focus point, which in my one is not black (but can have lost its paint...); the tiny holes on the mount' surface are identical, same positions. I am not sure there is a factory-fitted BM adapter... it must be noticed that the last Summaron 3,5 in screw mount (E39 filter) is DIFFERENT from this... the distance scale is not tapered, but on a vertical surface, like in the last Summaron 3,5 in BM (the M2 version) ' data-webShareUrl='https://www.l-camera-forum.com/topic/133373-summaron-35cm-f35-doesnt-call-up-35-frameline-on-my-m8/?do=findComment&comment=1465144'>More sharing options...
UliWer Posted October 7, 2010 Share #20 Posted October 7, 2010 I wonder if the original purpose of the preview lever was to allow for screw-mount/early bayonet lenses that didn't bring up the correct frames. Obviously! Though it took many thousand users of Leitz-Forum to call for a useful purpose of the lever in their wishlists until they introduced the 35mm-frames. Link to post Share on other sites More sharing options...
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