Help me identify this MP problem

[macmx]

I am having problems with light "streaks" or lines on my MP. It is not a light leak, as it does not appear outside the borders of the frame. It seems like the shutter somehow gets caught and therefor lets more light in. However, the lines do not appear at the same place on the frame, and sometimes there are many lines and sometimes one. Sometimes stronger, sometimes lighter. The thickness of the line varies a little. I have a nagging feeling it is when I am shooting at approx 1/60 sec and 1/1000 sec.

It is not a development issue. These films are from different labs.

I posted this before but the suggestions of light leak from back door or cold film did not seem to be correct.

How can i solve it? Just send it for CLA?
Any help is much appreciated. Thanks! 🙂

 

[Richard G]

Last one is puzzling. Could it be the second curtain is being held up four times, briefly and for the same time? In the other images, once and for a longer time. In which case look along the rails where the curtains run for a fragment of film or other debris as a shutter governing fault might be expected to be more regular. An MP is too young for perished light seals, I suppose. Alternatively, someone more expert than me may say that shutter travel irregularities couldn't cause this sharply demarcated marking.

 

[jordanstarr]

Given that they're straight lines and not outside the frame, I would assume a mechanical issue. Light leaks spread, not like this. I would second the shutter sticking

 

[Nomad Z]

Different types of film?

Do the streaks show up on the negatives?

 

[nobbylon]

Are you using reloadable cassettes?

 

[t6un]

The streaks on the last image show "clouds" in otherwise cloudless sky, so I would rule out the curtain hangups during the exposure.
At first I thought that the shutter isn't capping properly during wind-on, but since both the film and shutter curtains move in the same direction, how could the streaks be so widely distributed?

 

[Sparrow]

... and the lines themselves look so straight and precise it's hard to see how a mechanical leica could make them so accurately. Is there another common factor? were they all scanned on the same scanner or something like that perhaps?

 

[Mackinaw]

The sharp-edge nature of the bands is puzzling. You would think that if a shutter curtain was sticking, the overexposed edge of the band would be somewhat mushy, not sharp-edged. The bands in the last picture are another mystery. As T6un mentioned, there seems to be a repeatable "cloud" pattern in each of the four bands. No idea what would cause that.

These are on the negs, right? Not just the scans?

Jim B.

 

[Steve M.]

If it isn't the scans, if it's actually on the negs, my money is on the shutter being the problem.

 

[Benjamin Marks]

Well, light or some other kind of radiation is hitting the film from somewhere, and the highly defined edges of the extra exposure suggests that it is somewhere where the film is in contact with the "gap". If you have eliminated possible commonalities (self-loaded cassettes, airport scanners, other radiation sources), then the leak has to be either at the film plane on the front of the camera or where the doors meet the body at the back. What other efforts have you made to figure this out? You might try loading some fresh film into the camera in the dark, then shine a bright light on the front of the camera and let it sit for 10 minutes. Then ditto the front with lens cap on, then lens cap off. Then wind a couple of dark frames and let the camera sit in the sun with the lens cap on for 10 minutes. Wind on and change the orientation so that all sides get exposed. Take notes. Get the film developed and see. The image with several extra exposure lines is intriguing. How do you advance the film? One stroke? Multi-stroke?

 

[Pete B]

Do you tend to double stroke as you wind on? Do you think that in the snow scene with gloves on you wound on with a series of strokes rather than one stroke?
Pete

 

[bananasplit]

What you are showing here are straight lines with sharp edges. Of course those are not light leaks but something beeing the result of some king of "friction" on the neg.
As those lines are vertical I would say that a reloadable cartridge is out of question.
Are the neg scanned? Which scanner?
Could you describe your process from blank film to scan, it would help.