Bill W Posted July 12, 2013 Share #61 Posted July 12, 2013 Advertisement (gone after registration) I will try to induce flare/ fogging with my APO 50 this weekend. Can I ask a stupid question though. Is the appearance of flare/fogging more prevalent with color or B&W. Or is it just there in the color spectrum regardless. I am not an optical expert. Link to post Share on other sites More sharing options...
Advertisement Posted July 12, 2013 Posted July 12, 2013 Hi Bill W, Take a look here APO Summicron 50/2 ASPH: Central veiling flare / fogging. I'm sure you'll find what you were looking for!
Shade Posted July 12, 2013 Share #62 Posted July 12, 2013 I will try to induce flare/ fogging with my APO 50 this weekend. Can I ask a stupid question though. Is the appearance of flare/fogging more prevalent with color or B&W. Or is it just there in the color spectrum regardless. I am not an optical expert. I personally think it would be easier to spot if it was in colour, in b-w you will notice some loss of contrast on the flared area quite significantly.. Link to post Share on other sites More sharing options...
pajamies Posted July 12, 2013 Author Share #63 Posted July 12, 2013 I dont see any firm proof for your statements. As I said. Accept that we disagree. And what would constitute a firm proof in your opinion ? Please, enlighten us. We now know that you, sir, do not have faith in my pictures. What do you have faith in ? And how would you, sir, explain the clearly discernible central fogging in the pictures ? Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted July 12, 2013 Share #64 Posted July 12, 2013 You state 'We' like as if you speak on behalf of someone else also... Are you? Do they approve of yor statements before you post? Also the Sir thing you have going on is a little childish. Lloyd has his followers, I'm not among them. I have many of the same lenses and cameras as he has, I don't share his findings, not all of them anyway.... We have many pros here among them people who has posted great images from the lens, don't you wonder why they don't back up your images btw. If you can get them on your side, and they can produce a central loss of contrast, you win and Leica has produced an unfortunate feature into the lens.... Link to post Share on other sites More sharing options...
pajamies Posted July 13, 2013 Author Share #65 Posted July 13, 2013 The “We” you are referring to is in the quote from YOUR statement. You imply that you and other pro’s have not observed what I have observed, and refuse to discuss my findings as just findings. I am just an amateur, but I do not deserve the condescending attitude in your postings. Have you used the APO Summicron-M 50/2 ASPH yourself ? Link to post Share on other sites More sharing options...
lct Posted July 13, 2013 Share #66 Posted July 13, 2013 Ask Erik if he would order the lens now that he knows your problems. Just kidding folks. More seriously i did postpone my order as i don't find your veiling flare normal at all. Please be kind enough to keep us informed on how it goes. Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted July 13, 2013 Share #67 Posted July 13, 2013 Advertisement (gone after registration) Yea I have used the lens... Link to post Share on other sites More sharing options...
algrove Posted July 13, 2013 Share #68 Posted July 13, 2013 I have used 2 copies of this Lens with either a Leica UVa filtre or B+W color filter. Never had flair or fogging issues. Link to post Share on other sites More sharing options...
pajamies Posted July 13, 2013 Author Share #69 Posted July 13, 2013 Are you two (EGL & algrove) beeta-testers for Leica ? Link to post Share on other sites More sharing options...
wattsy Posted July 13, 2013 Share #70 Posted July 13, 2013 Flare is colored blobs apearing in the frame. Reduced contrast is related yes but not the same. I'm not sure the distinction matters. Getting into the semantics of what we can call flare is IMO to entirely miss the point. "Reduced contrast" as discussed here is often referred to as veiling flare but we could call it fogging or whatever you like, it is still an unwelcome (and usually unpredictable) phenomenon. My gut feeling is that the OP's 50 APO is faulty and Leica will either repair or replace it. Link to post Share on other sites More sharing options...
lct Posted July 13, 2013 Share #71 Posted July 13, 2013 The silvery ring here look curious though. I can't seem to recall having seen the same in other Leica lenses but i may be wrong. 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/208297-apo-summicron-502-asph-central-veiling-flare-fogging/?do=findComment&comment=2373460'>More sharing options...
algrove Posted July 13, 2013 Share #72 Posted July 13, 2013 Are you two (EGL & algrove) beeta-testers for Leica ? No. I buy my stuff and then complain if needs arise. So far no complaints on this lens. Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted July 13, 2013 Share #73 Posted July 13, 2013 I'm not sure the distinction matters. Getting into the semantics of what we can call flare is IMO to entirely miss the point. "Reduced contrast" as discussed here is often referred to as veiling flare but we could call it fogging or whatever you like' date=' it is still an unwelcome (and usually unpredictable) phenomenon. My gut feeling is that the OP's 50 APO is faulty and Leica will either repair or replace it.[/quote'] I believe you are missing the point here. It is CENTRAL loss of contrast that OP describes or CENTRAL fogging or CENTRAL veiling flare whatever you like. More or less all lenses has loss of contrast over the entire frame if you shot close to the sun. The word Flare came in later posts, also in the related thread on the non APO 50mm summicron latest version. And it came in where it gave no meaning hence my post trying to clarify what we where talking about. Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted July 13, 2013 Share #74 Posted July 13, 2013 Are you two (EGL & algrove) beeta-testers for Leica ? No, but I did shoot it before launch. My employer buys my gear, I did try to get it but was unable to convince him that it was that much better than the Summicron 50mm non APO Also I prefer the longer focus throw Link to post Share on other sites More sharing options...
Bill W Posted July 14, 2013 Share #75 Posted July 14, 2013 I am certainly not a lens tester and it was not a scientific approach but I shot about 30 different photos with my 50 APO. Both with and without a B+W UV filter. The only time I experienced flare was shooting almost directly into the afternoon sun. I expected flare and it was there. I tried various shooting angles to the sun and I was pleased with my results. Again, not scientific but I will keep my little 50. It is certainly sharp. Link to post Share on other sites More sharing options...
thighslapper Posted July 15, 2013 Share #76 Posted July 15, 2013 The original rumours .... and the reason that this lens is in such short supply..... was that it was very difficult to assemble and adjust perfectly to the standard required ...... and that there were a high percentage of rejects which presumably went back for re-assembly or various bits/elements swapped out..... Possibly that explains the variabilty ... as veiling/flaring does not seem to be a universally reported ..... some are just better than others and that Leica QC has to draw a line somewhere .... and above that lenses can range from just ok .... to perfect. Just a thought..... Link to post Share on other sites More sharing options...
alexander Posted July 16, 2013 Share #77 Posted July 16, 2013 The original rumours .... and the reason that this lens is in such short supply..... was that it was very difficult to assemble and adjust perfectly to the standard required ...... and that there were a high percentage of rejects which presumably went back for re-assembly or various bits/elements swapped out..... Possibly that explains the variabilty ... as veiling/flaring does not seem to be a universally reported ..... some are just better than others and that Leica QC has to draw a line somewhere .... and above that lenses can range from just ok .... to perfect. Just a thought..... I hope and think with such a lens on the beginning it's life circle all sold should/ will be perfect. Everything else would make no sense for Leica.... Link to post Share on other sites More sharing options...
Jim.grover Posted July 17, 2013 Share #78 Posted July 17, 2013 Hello. Have just been experimenting with the 50 APO for the first time. I too have fogging and lack of contrast in middle of image. Gets worse as you stop down...and is really poor when aperture closed, but image quality deteriorates from f5.6. See if your problem gets worse as you close the aperture. I can create the problem very easily (unfortunately!) Wide open the lens is stunning. But am going to send mine back for fix...as have lost confidence in the lens because of this problem. Irritating as I have had a similar problem with the new 75. Link to post Share on other sites More sharing options...
Jim.grover Posted July 17, 2013 Share #79 Posted July 17, 2013 I will try to induce flare/ fogging with my APO 50 this weekend. Can I ask a stupid question though. Is the appearance of flare/fogging more prevalent with color or B&W. Or is it just there in the color spectrum regardless. I am not an optical expert. Hi Bill...will be interested to hear how you get on. I've found that the problem only manifests itself as I close the aperture. Wide open the lens is perfect, but as you go beyond around 5.6 the central fogging gets progressively worse. Can be Very bad when fully closed. Problem is same on both Monochrom as well as 240...and with EVF on 240 you can observe the problem as you look through viewfinder and progressively stop down. Ahhhhh.... Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted July 17, 2013 Share #80 Posted July 17, 2013 ... I too have fogging and lack of contrast in middle of image. Gets worse as you stop down...and is really poor when aperture closed, but image quality deteriorates from f5.6. .... Do you mind sharing some images that show this, thanks! Link to post Share on other sites More sharing options...
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