PBeter Posted July 3, 2012 Share #1 Â Posted July 3, 2012 Advertisement (gone after registration) Another photographer alerted me to the following that I never heard of: Is it recommended to, as a lens for a long time is not in use, the aperturering completely turned down, to the smallest aperture. Â Or is this not matter? Link to post Share on other sites More sharing options...
Advertisement Posted July 3, 2012 Posted July 3, 2012 Hi PBeter, Take a look here Lens not in use set to smallest aperture?. I'm sure you'll find what you were looking for!
stunsworth Posted July 3, 2012 Share #2 Â Posted July 3, 2012 Never heard that one before. Link to post Share on other sites More sharing options...
IWC Doppel Posted July 3, 2012 Share #3 Â Posted July 3, 2012 The only thing I can think of is if there is some oil movement it will keep the blades cleaner ? Link to post Share on other sites More sharing options...
wda Posted July 3, 2012 Share #4 Â Posted July 3, 2012 A new one on me. However, if I retained control, that is not locked away in store somewhere, I would probably exercise the aperture and focus controls, from time to time, to keep lubricated parts refreshed. Link to post Share on other sites More sharing options...
mjh Posted July 3, 2012 Share #5  Posted July 3, 2012 Or is this not matter? I’ve never heard it would matter and I wouldn’t know why it possibly might. Link to post Share on other sites More sharing options...
earleygallery Posted July 3, 2012 Share #6 Â Posted July 3, 2012 Someone told me to leave the lens wide open for a while if you find some oil on the aperture blades and it may disappear. I tried this and it worked! Â I've not heard the advice to leave a lens fully stopped down however. Link to post Share on other sites More sharing options...
jaapv Posted July 3, 2012 Share #7  Posted July 3, 2012 Advertisement (gone after registration) I’ve never heard it would matter and I wouldn’t know why it possibly might. Using my imagination - maybe it will put some less strain on the little springs that are incorporated in the return mechanism - of an SLR lens.!. Even if that were the case - it would be be news to me- it would not be applicable to an M lens. Link to post Share on other sites More sharing options...
250swb Posted July 3, 2012 Share #8 Â Posted July 3, 2012 I suppose if grease is going to break down, get oily, and migrate along the aperture blades it will most likely happen if the lens is wide open with the blades bunched together, and less likely if stopped down and the blades spread out? Just an idea. Can't say I have ever bothered because if the grease has broken down with age it will spread just as quickly as soon as you use the lens. Â Steve Link to post Share on other sites More sharing options...
pgk Posted July 4, 2012 Share #9 Â Posted July 4, 2012 I think that we need a sticky about things to worry about when everything is working perfectly:eek:. Link to post Share on other sites More sharing options...
earleygallery Posted July 4, 2012 Share #10  Posted July 4, 2012 I think that we need a sticky about things to worry about when everything is working perfectly:eek:.  I'll start a list!  Fungus Depreciation (if a new model comes out) Shutter cocked or uncocked Aperture open or closed Financial stability of Leica's suppliers (sensors, batteries etc) Financial stability of Leica Will my sensor crack? Availability of film  (that's enough, Ed) Link to post Share on other sites More sharing options...
SJP Posted July 4, 2012 Share #11 Â Posted July 4, 2012 Oy! You forgot the visoflex. Link to post Share on other sites More sharing options...
Paul J Posted July 4, 2012 Share #12 Â Posted July 4, 2012 I have heard this, some time ago about old lenses. But can't remember if it was to leave it open or stopped down. I did it with my speed graphic lenses for a time, until I feared of being OCD. Lenses still work fine. Link to post Share on other sites More sharing options...
wparsonsgisnet Posted July 5, 2012 Share #13 Â Posted July 5, 2012 If this all works as with carbon-based image capture devices, then we should close the iris at night and open when the alarm goes off. Link to post Share on other sites More sharing options...
jdlaing Posted July 5, 2012 Share #14 Â Posted July 5, 2012 If this all works as with carbon-based image capture devices, then we should close the iris at night and open when the alarm goes off. Â Â But........ Â That lens and camera body is fluid filled and has no aperture blades. Link to post Share on other sites More sharing options...
gyoung Posted July 12, 2012 Share #15 Â Posted July 12, 2012 Malcolm Taylor told me after cleaning my Elmar 2.8/50 that its best to leave it at full aperture when not in use, the diaphragm is close to the front element and the lubricant is known to etch the glass over time. Same goes for the Elmarit 90/2.8 Â Gerry Link to post Share on other sites More sharing options...
normclarke Posted July 12, 2012 Share #16 Â Posted July 12, 2012 +1 Â Best, Â normclarke. Link to post Share on other sites More sharing options...
enenrf Posted July 12, 2012 Share #17 Â Posted July 12, 2012 Never heard about it. I always set them to biggest aperture. Link to post Share on other sites More sharing options...
masjah Posted July 12, 2012 Share #18 Â Posted July 12, 2012 I would have thought that, if it mattered significantly, then Leica would have given appropriate advice in their lens booklets. Certainly, with my R lenses, there is no such adivce. I keep my R lenses stored set at minimum aperture, but only so they are ready immediately on mounting for full available range in T or P mode. Link to post Share on other sites More sharing options...
nelly Posted July 12, 2012 Share #19 Â Posted July 12, 2012 If I had a lens that was not in use I would sell it Link to post Share on other sites More sharing options...
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