algrove Posted September 17, 2013 Share #381 Posted September 17, 2013 Advertisement (gone after registration) Indeed, but they based their assessment of whether the camera needed fixing on sale date, not serial no. At no point did they mention serial no ranges which suggests they did not know the affected ranges of serial nos. This is anyway off topic and so far as the lens is concerned, we can only be certain that new restarted production will be clear. Existing lenses may exhibit the problem. You can do what you want, mine is going back to Solms. If Leica deem that no repair is required, that's fine, but at least the lens will then have been evaluated by Leica, not me. If you think your lens evaluation skills exceed those of Leica, you will want to perform your own assessment and act accordingly. OK, Mark, but you were the one who was striking a parallel between the M240 and the APO50 as far as recalls. I do not consider my expertise better than anyone's, but just want to make sure there is a lasting fix that makes others happy with the repaired results before I do same. That's all. Link to post Share on other sites More sharing options...
Advertisement Posted September 17, 2013 Posted September 17, 2013 Hi algrove, Take a look here APO Summicron 50/2 ASPH: Central veiling flare / fogging. I'm sure you'll find what you were looking for!
marknorton Posted September 17, 2013 Share #382 Posted September 17, 2013 Well they have said the lenses have to go back to Germany - Leica NJ presumably do not have the skills - so I can understand your reluctance given the additional hassles of shipping out of country. Link to post Share on other sites More sharing options...
deliciouspizza Posted September 17, 2013 Share #383 Posted September 17, 2013 Been using the 50 APO for a few weeks, have only noticed the flaring on a handful of occasions. Here's an example of the veiling flare, on the left, there's a very bright light right outside the frame. It's really only been a problem once or twice. One time when shooting a heavily backlit subject the whole image was washed out with a very bright flare. I'm not even sure if it's big enough a problem to send back. This pic was just me and buddy goofing around at his studio. Link to post Share on other sites More sharing options...
algrove Posted September 18, 2013 Share #384 Posted September 18, 2013 Well they have said the lenses have to go back to Germany - Leica NJ presumably do not have the skills - so I can understand your reluctance given the additional hassles of shipping out of country. Leica NJ tells me that all APO lenses (R's included) go back to Solms for just about anything, except for the APO 135/3.4 M to have the 6 bit coding lens mount ring installed. Link to post Share on other sites More sharing options...
Jeff S Posted September 18, 2013 Share #385 Posted September 18, 2013 Puts' latest commentary on flare, with 50mm lens comparisons, here. Jeff Link to post Share on other sites More sharing options...
otto.f Posted September 18, 2013 Share #386 Posted September 18, 2013 Puts' latest commentary on flare, with 50mm lens comparisons, here. Jeff Exactly: "The built-in lens shade of the ASC 50 and SX 50 is ineffective when used to reduce flare. They are only useful as a mechanical protection for the front lens surface". It's a pity that Puts did not tell whether he used the Zeiss with or without shade Link to post Share on other sites More sharing options...
Peebles Posted September 18, 2013 Share #387 Posted September 18, 2013 Advertisement (gone after registration) Seems to me that Puts keeps missing the point. I don't think anyone's saying that the 50AA (or any other lens) should be 100% flare-free. There are proven issues with some 50AA lenses because of out-of-spec coatings. Link to post Share on other sites More sharing options...
k-hawinkler Posted September 18, 2013 Share #388 Posted September 18, 2013 Seems to me that Puts keeps missing the point. I don't think anyone's saying that the 50AA (or any other lens) should be 100% flare-free. There are proven issues with some 50AA lenses because of out-of-spec coatings. How do you know? Thanks. Link to post Share on other sites More sharing options...
Peebles Posted September 18, 2013 Share #389 Posted September 18, 2013 How do you know? Thanks. Leica has on multiple occasions said this was the case. Link to post Share on other sites More sharing options...
marknorton Posted September 19, 2013 Share #390 Posted September 19, 2013 Seems to me that Puts keeps missing the point. I don't think anyone's saying that the 50AA (or any other lens) should be 100% flare-free. There are proven issues with some 50AA lenses because of out-of-spec coatings. Thank you; since lens elements are coated in batches, it might be, for example, that just one batch was faulty and Leica cannot unfortunately tell us which serial number lenses that batch was used in. Puts might have achieved good results from his copy of the lens but we are not speaking of a design defect here, instead a manufacturing defect which means that certain copies of the lens as produced do not conform to the design. Therefore Put's results give us no guidance as to whether there are issues with our individual copies. I do not have the skills to fully evaluate my lens, still less the willingness to spend the time doing it, so the lens is going back to Leica for them to do it. My assumption is that they have the equipment to tell if my lens has the correct coatings. To be fair to Leica, it's very rare for lens manufacturing issues to surface. Link to post Share on other sites More sharing options...
lct Posted September 19, 2013 Share #391 Posted September 19, 2013 Leica has on multiple occasions said this was the case. Aside from LaVidaLeica, would you have any links? Just curious. Link to post Share on other sites More sharing options...
helged Posted September 19, 2013 Share #392 Posted September 19, 2013 Aside from LaVidaLeica, would you have any links? Just curious. This statement has been mentioned further up in the thread. Link to post Share on other sites More sharing options...
lct Posted September 19, 2013 Share #393 Posted September 19, 2013 Yes i knew it thanks but A. Schopf didn't say a word about out-of-spec coatings or any other cause of the central veiling flare if i read him correctly. Link to post Share on other sites More sharing options...
Peebles Posted September 19, 2013 Share #394 Posted September 19, 2013 Trouble with Leica Flagship Summicron? | La Vida Leica! Interview with Leica Camera CEO, Alfred Schopf — Kristian Dowling Link to post Share on other sites More sharing options...
lct Posted September 19, 2013 Share #395 Posted September 19, 2013 OK so Leica said nothing officially about out-of-spec coatings or any other cause of the central veiling flare right? Link to post Share on other sites More sharing options...
algrove Posted September 19, 2013 Share #396 Posted September 19, 2013 There are proven issues with some 50AA lenses because of out-of-spec coatings. I am trying to find what you call as "proven issues with some 50AA lenses because of out-of-spec coatings. I do not consider La Vida Leica! as a Leica official site. Link to post Share on other sites More sharing options...
Peebles Posted September 20, 2013 Share #397 Posted September 20, 2013 So you're burying your heads in the sand, pretending that the problem doesn't exist and waiting for something that will likely never come? Because clearly these multiple sources are making it all up. Sounds legit. Link to post Share on other sites More sharing options...
lct Posted September 20, 2013 Share #398 Posted September 20, 2013 Which multiple sources? I just see one rumor. A true one perhaps, but a rumor. Link to post Share on other sites More sharing options...
Ario Arioldi Posted September 20, 2013 Share #399 Posted September 20, 2013 I have this lens since several months and I never had any flare problem even when trying to induce it in extreme conditions (after the rumors). Nevertheless after reading the interview of Mr. Schopf I contacted Leica and they replied that the issue affects same sample only so that if I do not see any problem there is no need to send my lens for checking. Link to post Share on other sites More sharing options...
algrove Posted September 20, 2013 Share #400 Posted September 20, 2013 Ario- Now finally some facts. There is nothing like the horse's mouth. Link to post Share on other sites More sharing options...
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