uroman Posted September 2, 2011 Share #1 Posted September 2, 2011 Advertisement (gone after registration) My 35 cron has a slight click which is wider open than f/2... why is that? It looks like there is half a click of the aperture ring which is wider open than f/2???? I am sure it is normal? Link to post Share on other sites More sharing options...
Advertisement Posted September 2, 2011 Posted September 2, 2011 Hi uroman, Take a look here new 35 cron clicks past f/2. I'm sure you'll find what you were looking for!
LeicaPassion Posted September 2, 2011 Share #2 Posted September 2, 2011 My 35 cron asph goes very slightly past f2. It is about an 8th of a stop. It does not reach the half stop click, which you find with f2 and smaller apertures. Link to post Share on other sites More sharing options...
uroman Posted September 2, 2011 Author Share #3 Posted September 2, 2011 and when i move it to the wider open, partial click, the aperture diaphragm blades open up even a slight amount more... is this normal behavior? Link to post Share on other sites More sharing options...
kokoshawnuff Posted September 2, 2011 Share #4 Posted September 2, 2011 mine goes about 1/4 of a mm past. I can see the blades just barely move Link to post Share on other sites More sharing options...
uroman Posted September 2, 2011 Author Share #5 Posted September 2, 2011 is this a quality issue, or is it normal? I guess, is the lens considered perfect if it does that Link to post Share on other sites More sharing options...
kokoshawnuff Posted September 2, 2011 Share #6 Posted September 2, 2011 it's normal and somewhat common with a few leica lenses. Ultimately not so much a quality issue of specific lenses as it is design related, and it doesn't create any kind of noticeable change to the image. I wouldn't worry about it, the 35 Summicron ASPH is one of the best 35mm lenses ever made, so enjoy it... Link to post Share on other sites More sharing options...
menos I M6 Posted September 2, 2011 Share #7 Posted September 2, 2011 Advertisement (gone after registration) It is normal, no reason, to fear. It is also adjustable by a qualified repairman, how the click stops feel. Just use the lens and make sure, before the warranty expires, to review and eventually have it adjusted. Most Leica lenses, especially of newer design (mid 70s to Today) do not have a "hard stop" at the widest aperture click. Just take photos, don't worry ;-) Link to post Share on other sites More sharing options...
lct Posted September 2, 2011 Share #8 Posted September 2, 2011 Never got a lens w/o hard stop at full aperture but some of them go a fraction of millimeter further. No problem at all but this will not transform your Summicron into a Summilux i'm afraid. Link to post Share on other sites More sharing options...
jaapv Posted September 2, 2011 Share #9 Posted September 2, 2011 A worthy twin to the "rattling lens" thread. Link to post Share on other sites More sharing options...
wattsy Posted September 2, 2011 Share #10 Posted September 2, 2011 Just use the lens and make sure, before the warranty expires, to review and eventually have it adjusted. Why? As you state, this is "normal, no fear". Link to post Share on other sites More sharing options...
menos I M6 Posted September 2, 2011 Share #11 Posted September 2, 2011 Why? As you state, this is "normal, no fear". The feel of the aperture ring does change over the course of time under heavy usage with some Leica M lenses more than others. The aperture rings can loose up in their setting over time, resulting in an annoying "click" sound and slight concentric play, when moved (I have had inspected several 35 Cron ASPH with this issue). This is not a sign of breakage, but a sign, that the lens has to be opened by a qualified technician and the aperture ring to be set. It's basically your regular watch and set of a mechanical device. Doing this review of the aperture ring feel and inspection, if necessary within the period of warranty saves yourself and Leica from spending thoughts about costs and alike but just having a properly set up lens. Link to post Share on other sites More sharing options...
bbbonthemoon Posted September 2, 2011 Share #12 Posted September 2, 2011 Mine does it too from new Link to post Share on other sites More sharing options...
uroman Posted September 2, 2011 Author Share #13 Posted September 2, 2011 i have looked at all the other lenses i own, and none have this "hyper wide open" setting where it actually clicks in place to an aperture wider than the max aperture. My new 'cron actually has a slight click and it can be kept in position in this wider than max aperture. People here have said this is normal, but then say to get it checked in warranty? I guess i am wondering the following : is it normal for a brand new lens to have this issue? I know there is no hard stop, but do your leica lenses have this problem? If all leica lenses (or at least all 35 'crons) have this problem, then I am ok with it. But if it isn't in the design of the lens, then i am wondering if I should return the lens to b&h because of the defect. So is this purposeful? It sounds like people are saying that it is fine to have a lens like this, but that it is NOT purposeful on the part of leica. Maybe I am reading it wrong. Is Leica's intent to have a lens that does this, or is this something they would consider to be a mistake? My friend who shoots Leica states that this does not happen to his kit of lenses. Link to post Share on other sites More sharing options...
rob139 Posted September 2, 2011 Share #14 Posted September 2, 2011 My summicron has the same 'problem', since new. I am not worried, and therefore not considering sending it in, because it is not hindering normal use. If you are worried, it's best to ask Leica if whether is on purpose, or not. Rob Link to post Share on other sites More sharing options...
250swb Posted September 2, 2011 Share #15 Posted September 2, 2011 But if it isn't in the design of the lens, then i am wondering if I should return the lens to b&h because of the defect. . It is not a defect, they are all like that. Mine is eight years old, it did it from new, it is a characteristic of the lens. Steve Link to post Share on other sites More sharing options...
luigi bertolotti Posted September 2, 2011 Share #16 Posted September 2, 2011 A common non-issue... Link to post Share on other sites More sharing options...
adli Posted September 2, 2011 Share #17 Posted September 2, 2011 I have the same on my new 35 Lux (the new version). I don't consider it as a problem. My 35 cron has a slight click which is wider open than f/2... why is that? It looks like there is half a click of the aperture ring which is wider open than f/2???? I am sure it is normal? Link to post Share on other sites More sharing options...
jaapv Posted September 2, 2011 Share #18 Posted September 2, 2011 What kind of problem is this supposed to be? Out of 19 Leica lenses I own from 1934 to last week of age 8 do and 11 don't. A complete non-issue. Link to post Share on other sites More sharing options...
jeremyk Posted September 2, 2011 Share #19 Posted September 2, 2011 I guess it's the kind of problem where someone spends good money for 'legendary quality' and receives something they feel is less than legendary quality. That said, I recently purchased a used 35 cron asph and it had this same issue of moving past the end f stops. I was originally concerned. I also just picked up my brand new 50lux yesterday and it does the same thing (woohoo got it a month early!). Its just weird because I also have 2 cv and 1 zeiss lens and they stop at the ends. Thankfully it is a non-issue. Personally I plan to just shoot and consider having them adjusted if i need to send them in for a differen reason. Jeremy Link to post Share on other sites More sharing options...
bbbonthemoon Posted September 2, 2011 Share #20 Posted September 2, 2011 I guess it's the kind of problem where someone spends good money for 'legendary quality' and receives something they feel is less than legendary quality. That said, I recently purchased a used 35 cron asph and it had this same issue of moving past the end f stops. I was originally concerned. I also just picked up my brand new 50lux yesterday and it does the same thing (woohoo got it a month early!). Its just weird because I also have 2 cv and 1 zeiss lens and they stop at the ends. Thankfully it is a non-issue. Personally I plan to just shoot and consider having them adjusted if i need to send them in for a differen reason. Jeremy hmm, my 50 lux asph doesnt do that. Seems to be common "issue" on 35 cron, but 50 luxes are not known to experience that. Link to post Share on other sites More sharing options...
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