Film not fully exposed?

Is it possible to leave a negative film unexposed, remove it from the camera (e.g., to load another film) and then rewind it? Of course, this would sometimes result in double exposures, since you have to expose the film to advance it, but would that work?

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Uneternal
2 years ago

Would work.

You can even leave the cover on the lens and then trigger it again so often (preferably in the dark) that all already made pictures will be skipped.

The problem is, however, that films are automatically cut when developing, and problems arise when the distance from images is no longer correct. So maybe some pictures were cut in the middle. Therefore on the film bag best indicate: Do not cut film.

IXXIac
2 years ago

Hello

is called “Midroll Change” and there are/gab cameras that support this.

Otherwise, you need work discipline or you always apply film exactly identically (possibly apply a marker coat) before you add back cover. You need adhesive labels and felt sticks. And maybe a film-punchbacker.

miezepussi
2 years ago

yes, in principle. You have to rewind the movie before you take it out of the camera. You need to make sure that he doesn’t end up in the can – that’s probably the hardest thing, because most of the cameras are moving the film completely (so that the film is not inadvertently inserted again).

On the floor dark, so blind, you can put the film back into the camera and “wound”. You’ll have to guess how far you’re pulsing him. To do this, you should know your camera blindly (the threading process).

Do this in the light, you have the double exposures you have mentioned.

daedag
2 years ago

Yes, that’s possible, I occasionally do when it takes the circumstances.

You write the current counter reading, pulsate the film back and take it out.

When rewinding, make sure that you don’t pulsate the film completely into the cartridge, only so far that just one piece looks out (in the case of cameras with mechanical rewind crank, this goes well with some exercise; in the case of motor-driven cameras you can only hope that the camera lets a piece of the movie out, most of them do it). If the film is pulled into the cartridge, you need a so-called film retrieval, so you can pull the film out again.

After re-entry for re-use, make sure that the film is not exposed when the film is triggered. So lens cover on it, in addition if possible looking for a semi-way dark environment, not necessarily doing in the bright sun. Select camera on manual, aperture and a short exposure time, and then trigger as many images empty until the counter is back on the original stand, plus additional 1 or 2 images depending on the personal risk readiness, I always take 2 to safely avoid double exposure. You’re wasting 1-2 pictures, but better than risking a double exposure.

Yes, and when developing as already written here, the film bag “do not cut” was written on it so that not accidentally images are cut through because the position is no longer accurate.

guru61
2 years ago

of course it goes and that’s what you did:

Rewind film and make sure that the strap is not completely retracted into the cartridge.

Then rewind film, set the lens cover on it, set the shortest exposure time and then activate X plus 2 images in this way, and then continue photographing normally afterwards.

x= counter reading before rewinding