minoltist7
pussy photographer
http://www.flickr.com/photos/22919025@N05/tags/iskra/
and sort of problem, as seen here:
http://www.flickr.com/photos/22919025@N05/2503446298/sizes/o/
thin, long horizontal dark lines (scratches?) on film.
It's seen only on bw film Fomapan 200, developed by myself.
If camera scratches the film, where can it happen?
Pressure plate does not touch the film, as it's covered by backing paper
and sort of problem, as seen here:
http://www.flickr.com/photos/22919025@N05/2503446298/sizes/o/
thin, long horizontal dark lines (scratches?) on film.
It's seen only on bw film Fomapan 200, developed by myself.
If camera scratches the film, where can it happen?
Pressure plate does not touch the film, as it's covered by backing paper
VictorM.
Well-known
On the take-up side (the right side looking into the camera after removing the back), the film is probably touching the inner body of the camera on the emulsion side. Check there for rough spots. The scratches may also come from the way the film is handled during and after processing. Do you wipe the wet film down after the final rinse?
FallisPhoto
Veteran
Does an Iskra have film rollers, and are they turning? If that's not it, then it probably happened during processing. After your wash ends, before you hang the film up to dry, do you squeegee it? That's where most scratches happen, although I have also seen students claw the heck out of their film trying to force it to slide through a negative holder. Also, it could just be a bad roll of film.
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Eric T
Well-known
At minoltist7 is further along than I am. I bought an Iskra 2 and I can't even get the shutter to work. It is locked in the uncocked position. Do I have to load film in it for the shutter to work?
Eric
Eric
VictorM.
Well-known
Film must be loaded to operate the shutter from the release button. But by running the focus out to the minimum, the double exposure prevention interlock can be bypassed. See the photo below: after setting to minimum focus, push lever 1 to cock and then push lever 2 to fire.
Attachments
fidget
Lemon magnet
Nice pics!
I couldn't see any signs of scratches on the colour shots that I looked at at large scale. As you have said, seems to be only the B&W that is scratched, a few of these also have a dark band on the right hand side. A lot has happened to these.
Perhaps the camera is not the cause.
I couldn't see any signs of scratches on the colour shots that I looked at at large scale. As you have said, seems to be only the B&W that is scratched, a few of these also have a dark band on the right hand side. A lot has happened to these.
Perhaps the camera is not the cause.
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minoltist7
pussy photographer
I do not touch the film surface during the processing.
there are two things inside the camera which touch the emulsion side - metal roller on the left side, and black surface next to the frame "hole" on the right.
Roller looks smooths. Black surface can scratch film probably, if film pressed too hard against pressure plate.
I wonder why color film was not scratched? Maybe different thickness, or different base material (more resistant to minor scratches)
Ernst Dinkla
Well-known
Some silver/lacquer polish/compound and a cloth will deal with any rough surface in the camera. Clean it carefully afterwards.
Get a strip of plastic foil or some unused film and pull it with some force over the film path vice versa and check whether the path is smooth again.
This isn't an unusual problem with old cameras. There can be some corrosion of the die cast (zinc/aluminium) body.
Ernst Dinkla
FallisPhoto
Veteran
If you put it on the reels yourself, then yes you do touch the film surface during development.
If one roll of film was not scratched and the next one one was, if it only happens with one kind of film, and nothing is obviously wrong with the film rollers, the film rail/framing bracket, or the pressure plate, then I would strongly suspect that I'd gotten a bad roll of film. It happens a lot more often than most people think.
I also don't like that your negatives have dark "scratches;" most scratches (every single one that I can remember seeing) are light colored. Are you sure you are talking about the negatives, or did you mean the prints? If you really did mean that the negatives have dark scratches, then I would go back to the store (or ideally a different store) and buy one more roll of Fomapan. Shoot that and develop it before assuming it is the camera.
I'd also take a lot closer look at those "scratches." If they have soft edges, it may be some kind of odd light leak instead of a scratch.
minoltist7
pussy photographer
they are dark on prints, but hardly noticeable on negatives (you need to look against very bright light to see it ).
I hope they will not show up at all on photos, printed on diffusion enlarger.