jmr237 Posted September 27, 2014 Share #1 Posted September 27, 2014 Advertisement (gone after registration) I recently got an M6 classic from a reputable source and ran two rolls through it for testing. On several pictures I noticed what looks like a light leak. This seemed to happen on the frames when I changed lenses. The issue does not appear on consecutive frames, nor at the beginning or end of the roll. It just seems to be on the frame that was behind the shutter when I changed the lens. The effect is more subtle on the second image, but you can see a section of the street that is clearly lighter than the rest. While I didn't go to extremes to shield the camera from light when I changed lenses, it's not like I was holding it up into direct sunlight. Any ideas? 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! Quote 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/234619-how-would-you-diagnose-this-possible-light-leak/?do=findComment&comment=2679030'>More sharing options...
Advertisement Posted September 27, 2014 Posted September 27, 2014 Hi jmr237, Take a look here How would you diagnose this? Possible light leak?. I'm sure you'll find what you were looking for!
erl Posted September 27, 2014 Share #2 Posted September 27, 2014 May be a light leak, or processing marks. Did you self process or send films out? Quote Link to post Share on other sites More sharing options...
jmr237 Posted September 27, 2014 Author Share #3 Posted September 27, 2014 These rolls were developed and scanned by a lab I have used many times. Have never had issues with them in the past. Quote Link to post Share on other sites More sharing options...
250swb Posted September 27, 2014 Share #4 Posted September 27, 2014 This seemed to happen on the frames when I changed lenses. Any ideas? The answer would be to replace 'seemed' with definite knowledge. So have another day out photographing and for the first and last couple of frames of the day, or frames you specifically remember, change the lens out in the sunshine, do it in a leisurely manner to replicate worst case scenario. What does the clear film base look like adjacent to the artefact? Can you see anything extending into that area when you hold the negative to the light or looking at an acute angle at the surface? Steve 1 Quote Link to post Share on other sites More sharing options...
jmr237 Posted September 28, 2014 Author Share #5 Posted September 28, 2014 I will conduct a more controlled test and report back. But in the meantime, have others found that their film M's are susceptible to light leaks when changing lenses? Quote Link to post Share on other sites More sharing options...
250swb Posted September 28, 2014 Share #6 Posted September 28, 2014 If there is a fault yes, if there isn't, no. Steve Quote Link to post Share on other sites More sharing options...
Maarten Posted September 28, 2014 Share #7 Posted September 28, 2014 Advertisement (gone after registration) I would expect a vertical artefact when the shutter is faulty or a horizontal effect near the film perforation when the rails guiding the curtains is not tight. I once had problems with the curtains not overlapping properly. This would lead to smearing when the shutter was half cocked at the end of the film and you rewind the film with the curtains half way and the lens letting a lot of light in. But this looked different from your problem. Try with another film to confirm it did not happen during the processing. Maarten Quote Link to post Share on other sites More sharing options...
payasam Posted September 29, 2014 Share #8 Posted September 29, 2014 (edited) JMR, the upper or lower light shield may allow light to get in. Edited September 29, 2014 by payasam Quote Link to post Share on other sites More sharing options...
jmr237 Posted September 29, 2014 Author Share #9 Posted September 29, 2014 JMR, the upper or lower light shield may allow light to get in. Where are those on the camera? Quote Link to post Share on other sites More sharing options...
payasam Posted September 29, 2014 Share #10 Posted September 29, 2014 In front of the shutter. Quote Link to post Share on other sites More sharing options...
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