DerekF Posted August 1, 2010 Share #1 Posted August 1, 2010 Advertisement (gone after registration) I recently took these shots with my MP. As you can see, the sun was at the extreme edge of one of the photos and leaked into the next frame. I've had this happen before, although not as badly as this one did. Aside from this, I've not experienced any other problems. Is this normal or should I consider sending it to Leica for a once-over? 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/127498-light-leakage-between-frames/?do=findComment&comment=1393779'>More sharing options...
Advertisement Posted August 1, 2010 Posted August 1, 2010 Hi DerekF, Take a look here Light leakage between frames?. I'm sure you'll find what you were looking for!
aesop Posted August 2, 2010 Share #2 Posted August 2, 2010 ...what lens was used for both shots? Link to post Share on other sites More sharing options...
DerekF Posted August 2, 2010 Author Share #3 Posted August 2, 2010 Same lens, a 35 Summilux-ASPH. Unfortunately, I don't know what aperture it was shot at. I believe the shots were taken a few seconds apart. Link to post Share on other sites More sharing options...
Guest nephilim Posted August 2, 2010 Share #4 Posted August 2, 2010 I got a similar result a few months ago. I took a photo with the sun close to the upper border and as you can see in the (cropped) scan below, it's clearly visible in the following frame. Film used was TMax400 in an M7 w/50/1.4 ASPH. The guys at rangefinder forum told me it's light-piping and no camera problem. I haven't seen any issues in 'normally' lit circumstances. However, the whole kit went to Leica recently and they also replaced the light seals. But this might be connected with the replacement of the DX reader... Link to post Share on other sites More sharing options...
DerekF Posted August 2, 2010 Author Share #5 Posted August 2, 2010 Thanks, Torsten. I don't suppose you've had the chance to determine whether the new light seals have fixed the problem? Link to post Share on other sites More sharing options...
Guest zoz Posted August 2, 2010 Share #6 Posted August 2, 2010 I think this is light creeping through the film itself. In both cases there is an (enormous overexposed) image of the sun in one frame. This could cause that the carrier substrate is working like an optical fiber and the light is creeping through the carrier film into the next frame. To prevent this there is an anti halo coating on the backside of the film, but with such heavy lights it might have failed to absorb all of it. Link to post Share on other sites More sharing options...
tobey bilek Posted August 2, 2010 Share #7 Posted August 2, 2010 Advertisement (gone after registration) Bad light seals show as a darker area on the negative across the sky and sometimes expands into the border area. I think they redid the seals to be 100% safe. The new ones, past 10 years or more, are mylar and should never go bad. Link to post Share on other sites More sharing options...
aesop Posted August 2, 2010 Share #8 Posted August 2, 2010 I think this is light creeping through the film itself.In both cases there is an (enormous overexposed) image of the sun in one frame. This could cause that the carrier substrate is working like an optical fiber and the light is creeping through the carrier film into the next frame. To prevent this there is an anti halo coating on the backside of the film, but with such heavy lights it might have failed to absorb all of it. ...this is great stuff, Steffen - I never considered the carrier substrate in all my research into the matter. I have a vested interest, primarily because I shoot a lot of low-light, and I sometimes have to shoot "into the light". DerekF and Torsten, re: light seepage, I recommend reading through this entire thread - in particular, posts #13 & #19. I found it very informative and I think it is relevant to this discourse. Link to post Share on other sites More sharing options...
el.nino Posted August 2, 2010 Share #9 Posted August 2, 2010 I think this is pretty normal and I have seen this with many cameras. Link to post Share on other sites More sharing options...
aesop Posted August 2, 2010 Share #10 Posted August 2, 2010 Same lens, a 35 Summilux-ASPH. Unfortunately, I don't know what aperture it was shot at. I believe the shots were taken a few seconds apart. ...all my occurrences of this phenomenon have been restricted to lenses below the 40mm focal length. My unscientific conclusion is that it is related to the positioning of a very strong light source on or very near the edge of the frame of an image captured (invariably) with a wide-angle lens. Link to post Share on other sites More sharing options...
DerekF Posted August 2, 2010 Author Share #11 Posted August 2, 2010 Wow, great information! Thanks to all for the input. I'm especially happy to know that I probably don't need to return my MP for servicing after all. Link to post Share on other sites More sharing options...
Guest zoz Posted August 2, 2010 Share #12 Posted August 2, 2010 ...all my occurrences of this phenomenon have been restricted to lenses below the 40mm focal length. My unscientific conclusion is that it is related to the positioning of a very strong light source on or very near the edge of the frame of an image captured (invariably) with a wide-angle lens. I do not think that this has much to do with the focal length of used lens. It´s just more often the case that the sun itself is part of the image when it is taken with an wide angle than it is with a tele lens. Link to post Share on other sites More sharing options...
chrism Posted August 2, 2010 Share #13 Posted August 2, 2010 Now we film users can say we have a problem with strong light sources at the edge of the frame, just like the M8 and M9 users! Chris:p Link to post Share on other sites More sharing options...
Guest zoz Posted August 2, 2010 Share #14 Posted August 2, 2010 But on an M8 and M9 it is not effecting the last or next frame... Link to post Share on other sites More sharing options...
aesop Posted August 2, 2010 Share #15 Posted August 2, 2010 ...all my occurrences of this phenomenon have been restricted to lenses below the 40mm focal length. My unscientific conclusion is that it is related to the positioning of a very strong light source on or very near the edge of the frame of an image captured (invariably) with a wide-angle lens. ...Steffen, you may be right about the relevant focal lengths (post #12). I just checked out some negatives shot with the Voigtlander 50mm f1.1 some time back - yup, you guessed it, there is ample evidence of light creeping under the film gate. Not excessively, but it is there. Link to post Share on other sites More sharing options...
aesop Posted August 2, 2010 Share #16 Posted August 2, 2010 I recently took these shots with my MP. As you can see, the sun was at the extreme edge of one of the photos and leaked into the next frame. I've had this happen before, although not as badly as this one did. Aside from this, I've not experienced any other problems. Is this normal or should I consider sending it to Leica for a once-over? ...having reviewed your images again, DerekF, I would say the second frame exhibits both leakage and flare. Link to post Share on other sites More sharing options...
DerekF Posted August 2, 2010 Author Share #17 Posted August 2, 2010 ...having reviewed your images again, DerekF, I would say the second frame exhibits both leakage and flare. Yeah, I know about the flare. They're not the best images in the world. I was more concerned with the obvious light leak between frames. Based on the discussion here, I'll be more careful with strong light sources near the edge of the frame! Link to post Share on other sites More sharing options...
Guest dk_samurai Posted August 3, 2010 Share #18 Posted August 3, 2010 I think this is pretty normal and I have seen this with many cameras. +1 Just be aware that if you capture a strong light source near the edges of the frame, it will creep a bit into the next frame. Nothing wrong with your camera. This will also happen if you shoot a frame that is completely overexposed: here again some of the light will creep into the next frame. Just be aware of that when loading film, for example. /David Link to post Share on other sites More sharing options...
Guest nephilim Posted August 3, 2010 Share #19 Posted August 3, 2010 Many thanks from my side, too! I didn't know about the mechanism explained in the link aesop provided. Link to post Share on other sites More sharing options...
Fernmelder Posted August 3, 2010 Share #20 Posted August 3, 2010 Had that, too, one time with the Jupiter-12 35mm lens, see here: Link to post Share on other sites More sharing options...
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