markturnip
Newbie
Can someone help identify these streaks?
They only occur two or three times a roll.
Must admit this is expired film.
Also note I'm experiencing the issue mentioned here: https://www.rangefinderforum.com/forums/showthread.php?t=164530
They only occur two or three times a roll.
Must admit this is expired film.
Also note I'm experiencing the issue mentioned here: https://www.rangefinderforum.com/forums/showthread.php?t=164530
Attachments
Huss
Mentor
those are light leaks and the issue that you link to is answered in that thread.
markturnip
Newbie
ColSebastianMoran
( IRL Richard Karash )
See this thread for my approach to figuring out light leaks.
Huss
Mentor
Shoot a test roll and send it to a different lab.
farlymac
PF McFarland
Two clues: The light is coming from the back of the film, through the anti-halation layer. They are reddish to yellow depending on how much light is getting through (the effect is used in redscale photography by reverse loading film in the camera, and shooting at a much lower ISO, say 25 instead of 400 on a sunny day).
If you look at your roll of processed negatives, and this streak appears to be moving from right to left as the roll goes from the first exposure to the last, that is because the leak is likely at the door hinge, and as you roll the film onto the take-up spool, the roll gets larger, so the spot that winds up in front of the hinge is just a little bit further along each time. You'll also see fainter streaks on a negative that was just under one that sat in front of the leak for a long time, and so got another strike that was filtered by the outer film layer.
If this had been a lab fault, I doubt that the leaks would be as streaky as your samples, but more diffuse, and odd shaped.
PF
If you look at your roll of processed negatives, and this streak appears to be moving from right to left as the roll goes from the first exposure to the last, that is because the leak is likely at the door hinge, and as you roll the film onto the take-up spool, the roll gets larger, so the spot that winds up in front of the hinge is just a little bit further along each time. You'll also see fainter streaks on a negative that was just under one that sat in front of the leak for a long time, and so got another strike that was filtered by the outer film layer.
If this had been a lab fault, I doubt that the leaks would be as streaky as your samples, but more diffuse, and odd shaped.
PF