guyhein Posted July 17, 2013 Share #81 Posted July 17, 2013 Advertisement (gone after registration) Please have a look at Ken Rockwells description of the APO Summicron 90 mm asph. This lens has a problem with very bright light spots and shows an enormous coma. I don't know if the APO Summicron 50 mm asph. has the same problems with very bright light sources. All the best Guy Link to post Share on other sites More sharing options...
Advertisement Posted July 17, 2013 Posted July 17, 2013 Hi guyhein, Take a look here APO Summicron 50/2 ASPH: Central veiling flare / fogging. I'm sure you'll find what you were looking for!
Jim.grover Posted July 17, 2013 Share #82 Posted July 17, 2013 Will do...may take a few days as currently on vacation (just with iPad). Link to post Share on other sites More sharing options...
mkrzyzow Posted July 17, 2013 Share #83 Posted July 17, 2013 I can induce a veiling flare quite easily on the 50 APO by taking a picture in the direction of the sun, with the sun roughly 20 degrees above top frame of the photo. It is bothersome and I do wish Leica had included a longer hood, even at some cost to the design aesthetic. On the other hand, other Leica 50s I have used have the same problem to varying degrees, and in all other respects, this lens is spectacular. Link to post Share on other sites More sharing options...
platypus Posted July 18, 2013 Share #84 Posted July 18, 2013 I hope this is relevant and of interest. Taken yesterday morning (APO 50 on MM) at f16 it is quite the biggest flare I have ever encountered, it bounced straight off the water. 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=2377072'>More sharing options...
Jim.grover Posted July 18, 2013 Share #85 Posted July 18, 2013 Here are a couple of shots showing central veiling...open and stopped all the way down to 16. Lovely contrast open...but when closed....! 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=2377093'>More sharing options...
lct Posted July 18, 2013 Share #86 Posted July 18, 2013 There is indeed a problem here. Thanks for sharing. Link to post Share on other sites More sharing options...
Jim.grover Posted July 18, 2013 Share #87 Posted July 18, 2013 Advertisement (gone after registration) Here's a better set of the earlier images...each set of three shot at 2/5.6/16. You can see that even at 5.6 the problem is visible. Am sending this as 3 threads given image quotas! 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=2377160'>More sharing options...
Jim.grover Posted July 18, 2013 Share #88 Posted July 18, 2013 Second set... 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=2377161'>More sharing options...
Jim.grover Posted July 18, 2013 Share #89 Posted July 18, 2013 Last set... 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=2377162'>More sharing options...
wattsy Posted July 18, 2013 Share #90 Posted July 18, 2013 It's not unlike the problem that afflicts some (all?) 75 Summicron lenses. There's a thread in the German forum (Olaf will probably have the link) which shows this to good effect. Link to post Share on other sites More sharing options...
Jim.grover Posted July 18, 2013 Share #91 Posted July 18, 2013 Thanks Ian...I know the problem you refer to on the 75mm...I have much worse problems with this lens with central veiling flare! Has been back to Solms but they were unable to fix it...am seriously thinking of trading down to the 75 summarit (which I don't believe suffers from this problem) as I just can't rely on the summicron as the flare seems to creep in very easily if light in front or to sides. Very frustrating. Jim Link to post Share on other sites More sharing options...
Paul J Posted July 18, 2013 Share #92 Posted July 18, 2013 It's most disappointing to see these images above which shouldn't be flaring out like this. It's enough to put my APO plans on hold. Link to post Share on other sites More sharing options...
skinnfell Posted July 18, 2013 Share #93 Posted July 18, 2013 Judging from the test shots, I would send this lens back as soon as possible. I would not accept this from any brand, and least of all the "flagship" lens from Leica. Link to post Share on other sites More sharing options...
Jim.grover Posted July 18, 2013 Share #94 Posted July 18, 2013 Agreed...I need to send this back (sadly). It's also the case that as it fogs in the centre, you lose focus sharpness at the same time, so even processing doesn't fix it. Link to post Share on other sites More sharing options...
Paul J Posted July 18, 2013 Share #95 Posted July 18, 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. I have a number of these in my Noctilux. I'm almost certain it's the bevelled edge of the lens element. I have never had this issue though. The APO is a much smaller and tightly packed lens so perhaps this has more of a baring on things. 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=2377240'>More sharing options...
Jeff S Posted July 18, 2013 Share #96 Posted July 18, 2013 Jim.grover....good display of the issue. This provides more reason for me to be content with the already terrific Summilux asph, which required service to fix the 'sticky' focus turn, common in some samples. I wouldn't want to deal with another potential sample variation issue with Leica, especially one affecting IQ. Jeff Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted July 18, 2013 Share #97 Posted July 18, 2013 Agreed...I need to send this back (sadly). It's also the case that as it fogs in the centre, you lose focus sharpness at the same time, so even processing doesn't fix it. Thanks for posting these images, I agree that they clearly show the problem in the center when stopping down. Looking forward to Leicas reply. Link to post Share on other sites More sharing options...
Bill W Posted July 18, 2013 Share #98 Posted July 18, 2013 Obviously I need to do some more testing with mine and not with the sun creating flare. Has anybody heard from Leica regarding this issue and does it present itself with every APO 50 released so far? Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted July 18, 2013 Share #99 Posted July 18, 2013 I hope this is relevant and of interest.Taken yesterday morning (APO 50 on MM) at f16 it is quite the biggest flare I have ever encountered, it bounced straight off the water. This is a plain reflection of the sun hitting the water surface, not the same issue... Link to post Share on other sites More sharing options...
Paul J Posted July 18, 2013 Share #100 Posted July 18, 2013 This is a plain reflection of the sun hitting the water surface, not the same issue... Looks related to me, just more intense. I don't have this shooting with other lenses. This is not an abnormal shot, it shouldn't be flaring like that. Link to post Share on other sites More sharing options...
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