mirekti Posted January 18, 2014 Share #1  Posted January 18, 2014 Advertisement (gone after registration) After I got my 75mm Cron back from the apperture ring repair in NJ I started to notice a veiling flare with this lens. It seems to me it wasn't so obvious or often before I send the lens to NJ. However, I cannot confirm it, as the lens behaves differently with a slight change in composition so it might have been I didn't hit the spot so often in the past.  I also wonder, why Leica didn't recall the 75APO when this was discovered as they did with the 50mm APO? I found in the 50APO thread many new lenses have this issue, so why is this guy Peter Karbe keep on creating lenses that are prone to this effect?  These shots were taken on a cloudy day f/8 and f/11. The sun was behind the clouds, and behind my back. 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/220394-is-a-veiling-flare-new-leica-signature-how-long-is-the-list/?do=findComment&comment=2511924'>More sharing options...
Advertisement Posted January 18, 2014 Posted January 18, 2014 Hi mirekti, Take a look here Is a veiling flare new Leica signature, how long is the list?. I'm sure you'll find what you were looking for!
elgenper Posted January 18, 2014 Share #2  Posted January 18, 2014 Mine behaves about the same; it is without doubt the most flare-prone lens I have. The only problem with this otherwise excellent lens!  It went to Solms for focus adjustment about a year ago, but I don´t see any obvious difference in flare before/after. Link to post Share on other sites More sharing options...
lct Posted January 18, 2014 Share #3 Â Posted January 18, 2014 So you've got flare with the sun behind your back? Doesn't sound normal to me. Did you use a filter? Just curious. Link to post Share on other sites More sharing options...
mirekti Posted January 18, 2014 Author Share #4  Posted January 18, 2014 So you've got flare with the sun behind your back? Doesn't sound normal to me. Did you use a filter? Just curious.  The sun was somewhere behind me, and it was a cloudy day. I made many photos with this lens, and when it delivers it is excellant.  Do you want to say you never had this kind of issue with this lens? Should I send it to Solms?  I didn't use any filter. Here is another sample where the lens points -135 degrees from the light source (big window, and the sun shining through it). Tha camera was in shade, and the the bed was lit by sun up to some 30 cm from the subject. However, the lit part of the bed was right of the lens so it might be the linen brought this light to the lens. Anyhow, not something I wanted. ...and this was @2.8 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/220394-is-a-veiling-flare-new-leica-signature-how-long-is-the-list/?do=findComment&comment=2512210'>More sharing options...
mirekti Posted January 18, 2014 Author Share #5 Â Posted January 18, 2014 Mine behaves about the same; it is without doubt the most flare-prone lens I have. The only problem with this otherwise excellent lens! Â I read so many reviews before I purchased this lens, and I didn't find this infromation. I might be spoiled by 35FLE, as it is a wide angle, and doesn't flare so much which is a curious fact. Link to post Share on other sites More sharing options...
Paul J Posted January 18, 2014 Share #6 Â Posted January 18, 2014 None of these photos have the sun behind you. Link to post Share on other sites More sharing options...
mirekti Posted January 18, 2014 Author Share #7 Â Posted January 18, 2014 Advertisement (gone after registration) None of these photos have the sun behind you. Â Well, first two certainly don't have the sun hitting the front element. I cannot confirm it for the third one, as the flare is stronger so it might be the sun hit the front element. However, the sun was behind the clouds in all scenarios, and 90 degrees or more away from the where I pointed the lens. None were shot pointing it the sun's direction. Â What about the in the shot in the room, is this expected as normal too? Link to post Share on other sites More sharing options...
lct Posted January 18, 2014 Share #8 Â Posted January 18, 2014 Every lens can flare near a bright window. I would redo your test carefully with the sun behind you to be sure. Link to post Share on other sites More sharing options...
elgenper Posted January 18, 2014 Share #9  Posted January 18, 2014 Mine behaves about the same…..  OK, after reading more about the circumstances behind your shots, I have to modify my statement. Mine doesn´t flare unless there is a light source in front of the lens, within 45 degrees or so from the lens axis. With the sun behind me, and no very strong reflections (from e. g. windows), I have no problems. Link to post Share on other sites More sharing options...
CheshireCat Posted January 18, 2014 Share #10 Â Posted January 18, 2014 Same with my Elmarit-M 90 (11807). This unpredictability makes the lens useless for me. I wonder if the 90 APO has the same problem. Link to post Share on other sites More sharing options...
jdlaing Posted January 18, 2014 Share #11 Â Posted January 18, 2014 Every lens can flare near a bright window. I would redo your test carefully with the sun behind you to be sure. Â It can also flare from a reflection off something shiny like ice crystals when the sun is behind you. Link to post Share on other sites More sharing options...
Paul J Posted January 18, 2014 Share #12  Posted January 18, 2014 Well, first two certainly don't have the sun hitting the front element. I cannot confirm it for the third one, as the flare is stronger so it might be the sun hit the front element. However, the sun was behind the clouds in all scenarios, and 90 degrees or more away from the where I pointed the lens. None were shot pointing it the sun's direction. What about the in the shot in the room, is this expected as normal too?  Not denying the flare is disappointing and excessive. Though, if the sun were behind your back then the situation would be far worse.  Out of interest was the hood extended? Link to post Share on other sites More sharing options...
Paul J Posted January 18, 2014 Share #13 Â Posted January 18, 2014 I do think the fact it's a rangefinder makes flare a far more common issue and a lot of lenses have this problem. Using an SLR I often have to shield the light with my hand even when using a hood o some lenses otherwise this soft of veiling flare can show up quite easily. The difference is you see it straight away through the lens and can easily be unaware of it with a rangefinder. Link to post Share on other sites More sharing options...
mirekti Posted January 18, 2014 Author Share #14 Â Posted January 18, 2014 Out of interest was the hood extended? Â Yes, I always extend the hood. All this doesn't happen so often, I'd rather say it is very rare. On the other hand 90% of my shots were wide open, hence, I haven't noticed this before. Â I considerd buying this http://www.bhphotovideo.com/c/product/11168-REG/B_W_65069625_49mm_Screw_In_Metal_Telephoto.html , but the lens woundn't fit the bag anymore. Link to post Share on other sites More sharing options...
Paul J Posted January 18, 2014 Share #15 Â Posted January 18, 2014 I think those first shots are in quite flare prone lighting though. Overcast, backlit-overhead and under trees. It is annoying not being able to see through the lens in these instances. Link to post Share on other sites More sharing options...
hoppyman Posted January 18, 2014 Share #16 Â Posted January 18, 2014 I don't know what your individual lens is doing nor the cause of what does appear to be veiling flare in the shots that you posted. I don't think that it is typical behaviour of the lens design. If you have not already, with any lens at all I would start by ensuring that the front and rear elements are clean and of course always use the hood. Filters add more surfaces too. This 75 is my favourite lens. I'm not aware of any propensity for flare with it personally. I can't recall any instance of flare to the detriment in my shooting over thousands of frames. One of the properties I value with the modern M lenses is their ability to retain contrast, detail and clarity when there is bright light behind the subject. There are millions of possible photo scenarios naturally and any lens at all can be forced to flare to some degree in specific conditions. Faerie make up 1 photo - Geoff Hopkinson photos at pbase.com Ba1102 photo - Geoff Hopkinson photos at pbase.com stvm3137 photo - Geoff Hopkinson photos at pbase.com Kendall's eyes photo - Geoff Hopkinson photos at pbase.com Link to post Share on other sites More sharing options...
TheGodParticle/Hari Posted January 18, 2014 Share #17 Â Posted January 18, 2014 I like some flare in my pictures once in awhile but sometimes the APO 75/2 overdoes it -> http://forum.mflenses.com/userpix/20131/2221_L1038781Edit_1.jpg Link to post Share on other sites More sharing options...
mirekti Posted January 18, 2014 Author Share #18 Â Posted January 18, 2014 This 75 is my favourite lens. Â ...mine as well. Were these shot wide open or close to it? I checked my old photos, and couldn't find the lens flare bellow f/8. (Except the above posted "in the room" photo or when the subject is backlit with the sun which I expected) Link to post Share on other sites More sharing options...
hoppyman Posted January 18, 2014 Share #19 Â Posted January 18, 2014 I like some flare in my pictures once in awhile but sometimes the APO 75/2 overdoes it -> http://forum.mflenses.com/userpix/20131/2221_L1038781Edit_1.jpg That looks like it also has overexposure and a light source just outside frame overloading the sensor and its associated processing. That is a separate issue altogether to the lens optical properties. Link to post Share on other sites More sharing options...
hoppyman Posted January 19, 2014 Share #20 Â Posted January 19, 2014 ...mine as well. Were these shot wide open or close to it? I checked my old photos, and couldn't find the lens flare bellow f/8. (Except the above posted "in the room" photo or when the subject is backlit with the sun which I expected) I linked to four samples which were shot ranging from f/4 to f/16. There are a lot of others in my galleries though. However as I mentioned, no lens is immune and there are many many possible scenarios for shooting. My point was just to show some alternative examples where I haven't had a problem with the lens ever. I don't think that what you've shown is normal. Link to post Share on other sites More sharing options...
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