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is this caused by a stuck shutter curtain ?


azman

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sent in 3 rolls for processing. two rolls came back with 3 frames each showing almost exactly the same issue, frames were from the middle of the roll of film. are these caused by a stuck shutter curtain ? if so, is my only option a CLA ? or is there something i can do myself ?

 

the camera is a iiiC, and the film was trimmed to the 21st sprocket hole.

 

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Doesn't look to me as a curtain issue... whatever it could be, something related to curtain's movement ought to leave something "vertical" on the neg.. or, better to say, if it is not vertical is something so bad that seems impossible that shutter goes fine in the other next frames ;

sorry for the trivial question... but can happen... are you sure you hadn't "something" in front of the lens ? It happened to me with some compact LTM lenses like the 28s or 35s (more difficult with the Elmar 5)

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that's also possible, luigi. the 3 frames are consecutive and i was standing pretty much at the same location. maybe it was the strap. oh, and there wasn't any sign of scoring or scratch on the negative either.

Edited by azman
added a bit more info
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If it's only the three frames my guess is something was hanging in front of the lens. Easy enough to do with a IIIc. If all of the frames on the rolls you had processed showed the same markings then it would point towards something mechanical but it looks more like an oops.

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the camera is a iiiC

 

I tell ya, Leica is just terrible!

The IIIC is only 78 years old and it needs service already?

 

What's an immortal to do?

 

It looks like a processing machine error to me.

Try another roll. Hope it works out.

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Nothing you can do yourself.

 

Get a cheap roll and try different speeds to see if you can recreate the problem. No need to have prints made.

 

You might actually be able to see the problem if you remove the lens and release the shutter.

 

There might be debris in the shutter track. Never try to pull extra frames as the film tears and the pieces go who knows where. Happened to me once with a used camera.

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Nothing you can do yourself.

 

Get a cheap roll and try different speeds to see if you can recreate the problem. No need to have prints made.

 

You might actually be able to see the problem if you remove the lens and release the shutter.

 

There might be debris in the shutter track. Never try to pull extra frames as the film tears and the pieces go who knows where. Happened to me once with a used camera.

 

This seems to be on the right track.

 

You said it happened in the middle of the roll on 2 rolls? Could it be your film somehow buckled a little bit and caught one of the shutter curtains forcing it to wedge itself at an angle? This would block the exposure and cause a dark area. Or if the film did not buckle, maybe the shutter is acting up this way on its own. Or as above there is something in the track.

 

If the sprocket holes next to the dark areas are clear, it can't be a processing error... which would be very unlikely to cause an effect like this in any case.

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the camera was loaded with a new roll when i got the results back. hopefully it's an oops.

 

in the meantime, i'm paying a bit more attention when advancing the film to see if anything appears off e.g. more resistance than usual, etc.

 

thanks all for the inputs. will share if anything weird happens.

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  • 2 months later...

I think Luigi is correct - a curtain malfunction would cause a vertical blockage, not a diagonal one as you have. My money is on some sort of external lens blockage.

 

This looks suspiciously like an errant camera strap. Unlike an SLR, an M camera will not always show you a partial lens blockage because you are not viewing through the lens.

Edited by Messsucherkamera
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