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Showing results for tags 'aperture'.
Found 3 results
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I am experiencing an unfortunate problem with my APO-Summicron 90mm. After a brief portrait session at the office, I left the lens at the camera, over a desk. I almost always use it wide open and occasionally at f/5.6, but this time I went for f/16. When I returned to put it back to the leather case I noticed that the aperture ring was totally loose. It’s now spinning 360 degrees and the aperture blades don’t move at all. I always felt that the ring was too soft for my taste. I’d prefer it to be stiffer. But I never felt that there was a problem. In fact, the lens is still in very good shape and it never gets any rough using. I live in Brazil and I was just planning to take it for a trip do Portugal in about 45 days. I keep my equipment under an insurance that covers for damage. But if this is something relatively easy/cheap/quick to repair, I would prefer not to call the insurance company. Did any of you guys experienced something like this? Any help will be much appreciated. Thanks!
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Hi, I'm looking at getting a Summitar and was wondering whether anybody can shed light on the two variants, namely the round aperture bladed version approx. pre 1950 and the later type with the hexagonal arranged aperture. Generally the latter version seems to be a little less expensive and less sought after if my observations are correct. Both lenses opened at f2 there is clearly no difference in aperture shape but any smaller setting then does the hexagonal opening perhaps provide a little less appealing bokah for instance? Or perhaps there may be other discernible differences? Thanks in advance.
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Hi all, a while ago I've bought a used Elmarit-M 90mm (latest version) for which I found a few days ago by accident that the aperture blades do not fully disappear when the lens is used wide open. Consequently, the bokeh balls aren't circular, but have a more "saw blade"-like shape. If I turn the aperture ring beyond 2.8, which is possible by a tiny bit, the blades retract a bit more, but never completely (cp. attached images). As I wasn't sure whether this is by design or a defect, I have contacted Leica Support and they tell me that this is the normal behaviour, but offer a CLA for the lens nonetheless. Could any other owner please check with his or her lens? Thanks in advance, Rolf
