RJT Posted July 25 Share #1 Posted July 25 (edited) Advertisement (gone after registration) Hello learned friends - my 35mm summicron 11674 has a problem! The aperture ring has literally dropped off the lens. I can place it back on and it will turn the aperture but with a light pull, it simply comes off again. Does anyone know of this problem? And is it a return to Wetzlar thing? 😳 Grateful for any advice. Thank you. Edited July 25 by RJT 1 Link to post Share on other sites More sharing options...
Advertisement Posted July 25 Posted July 25 Hi RJT, Take a look here Leica 35mm F2 Asph M Chrome - 11674 - aperture ring has slipped off!. I'm sure you'll find what you were looking for!
erl Posted July 26 Share #2 Posted July 26 Without any particular knowledge of that lens, my guess is that maybe a simple grub screw is loose or lost. Hopefully a trip to your nearest camera mechanic/camera shop will at least confirm and even, on the spot, fix the issue. Probably depends on which country you are in, but my experiences are that 'local' is a lot faster than Leica, and mostly just as good. 1 Link to post Share on other sites More sharing options...
RJT Posted July 26 Author Share #3 Posted July 26 Thank you Erl. Very much appreciated. I can’t see any sign of there being a grub screw - it almost looks like the aperture ring just slides on and is then secured with loctite!? Link to post Share on other sites More sharing options...
erl Posted July 26 Share #4 Posted July 26 13 minutes ago, RJT said: Thank you Erl. Very much appreciated. I can’t see any sign of there being a grub screw - it almost looks like the aperture ring just slides on and is then secured with loctite!? Certainly won't be loctite! I venture the opinion that a grub screw should be hidden under the focus ring. Look for a tiny screw hole or detent in the ring when it comes off again. Link to post Share on other sites More sharing options...
Gelatino Posted July 26 Share #5 Posted July 26 17 minutes ago, erl said: Certainly won't be loctite! I venture the opinion that a grub screw should be hidden under the focus ring. Look for a tiny screw hole or detent in the ring when it comes off again. A tiny drop of nail varnish on the thread before putting back the screw. Link to post Share on other sites More sharing options...
RJT Posted July 26 Author Share #6 Posted July 26 Thanks Erl. I just can’t see any sign of there being a grub screw or indeed an indent. This is what I can see…… 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/423294-leica-35mm-f2-asph-m-chrome-11674-aperture-ring-has-slipped-off/?do=findComment&comment=5838761'>More sharing options...
RJT Posted July 26 Author Share #7 Posted July 26 Advertisement (gone after registration) And as attached……. 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/423294-leica-35mm-f2-asph-m-chrome-11674-aperture-ring-has-slipped-off/?do=findComment&comment=5838762'>More sharing options...
erl Posted July 26 Share #8 Posted July 26 Hmm. I can't suggest anything further, except definitely take it to a camera mechanic if you have one locally. Next try a Leica store, but they will probably say send it to Leica. I am sure the problem is not serious in terms of fixing, but very irritating. 1 Link to post Share on other sites More sharing options...
RJT Posted July 26 Author Share #9 Posted July 26 Thank you Erl. The slight yellowing around the inside of the aperture ring does rather look like something is used to hold the ring? 1 Link to post Share on other sites More sharing options...
RJT Posted July 26 Author Share #10 Posted July 26 I have asked a few repairers in the UK and will see what they think? Just a bit of a mystery as it’s a very lightly used lens and has no signs of any damage etc……🧐 1 Link to post Share on other sites More sharing options...
jgeenen Posted July 26 Share #11 Posted July 26 There are some videos on YouTube that show disassembly of the previous 35 asph. Those do not indicate that the aperture ring is fixed to the aperture mechanism with glue. But of course that might have changed with the latest version (which I believe is the one you have). You should contact Leica and ask them for advice. If it is a recent lens, turnaround times aren‘t that long, but of course shipping and customs add up. Link to post Share on other sites More sharing options...
RJT Posted July 26 Author Share #12 Posted July 26 Thank you jgeenen - good idea to at least ask them - but rather suspect they may simply want to take it in for repair. Link to post Share on other sites More sharing options...
Maarten Posted July 26 Share #13 Posted July 26 Looking at your picture with the aperture ring in place, I wonder if there is a ring missing that fits on the black thread that is still visible under the filter? That ring would then keep the aperture ring in place. Although the residue looks like an adhesive, I doubt a modern Leica lens is glued together. Link to post Share on other sites More sharing options...
Vanillasludge Posted July 26 Share #14 Posted July 26 Getting my popcorn ready to see how this ends. 😂. 2 Link to post Share on other sites More sharing options...
colint544 Posted July 27 Share #15 Posted July 27 Wild if it turns out that the ring is simply glued in place, and that's the way the lens was designed. Das Wesentliche, as they say. 1 Link to post Share on other sites More sharing options...
earleygallery Posted July 27 Share #16 Posted July 27 It does look like some kind of glue in that photo, and with no other obvious way of the ring being fixed to the mechanism........... Please update us when you find out more from Leica. I'd be asking the question specifically is it just glued in place (and if it is I'd probably try and glue it back myself, and then sell it and buy a Voigtlander lens instead). Link to post Share on other sites More sharing options...
delta100 Posted July 27 Share #17 Posted July 27 RJT, did you have a problem with taking the lens hood off and on before aperture ring failure? I only ask because I purchased a brand new 35 Summicron lens (Black) one week ago and when putting the hood back on or taking off the hood it made a very loud screeching noise as if the thread of the hood was un - screwing part of the lens from the inside?. Leica made a full replacement for me. Link to post Share on other sites More sharing options...
RJT Posted July 27 Author Share #18 Posted July 27 A respected camera repairer in the UK, believes it is simply glued into place! Feels very odd for a premium lens…..but perhaps that is the answer? Link to post Share on other sites More sharing options...
RJT Posted July 27 Author Share #19 Posted July 27 Delta 100 - not that I have been aware of - but I have always used the hood and it was only when I took it off that I noticed the aperture ring was loose. As you will know, the hood does act as a “retainer” for the aperture ring, albeit, it must be able to be used without. Link to post Share on other sites More sharing options...
RJT Posted July 27 Author Share #20 Posted July 27 17 hours ago, Maarten said: Looking at your picture with the aperture ring in place, I wonder if there is a ring missing that fits on the black thread that is still visible under the filter? That ring would then keep the aperture ring in place. Although the residue looks like an adhesive, I doubt a modern Leica lens is glued together. There is a silver lens ring, that you use if the hood isn’t being used - but it doesn’t retain the aperture ring. Link to post Share on other sites More sharing options...
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