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I have to press the film rewind button on the bottom of my Pentax ME Super in order to be able to rewind the film back into the canister when I'm done shooting a roll. If I accidentally press it before I'm done with the roll, can I just keep on shooting? How do I make sure I don't end up with multiple exposures, or anything like that?

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2 Answers 2

up vote 9 down vote accepted

I don't know about this particular model, but in all my film cameras advancing the film (by pulling the film advance lever) resets the film release lock. Depress shutter with cap on, then advance again. You should see the winder turn, indicating the film is advancing. That should be enough to keep you shooting. (I'm assuming from your post, that you don't have a motorized drive). You won't lose the last frame provided you have not rewound the film at all.

EDIT: Corrected as per comment below (whuber)

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+1 That's a feature of all manual cameras I have ever used: pressing the rewind button disengages the film advance mechanism, so pulling the lever only resets the shutter, setting you up for a double exposure. At the end of a full pull, the rewind button should re-engage. Thus, after one pull (where you will feel no film tension) you should shoot a dark image (lens cap on, high shutter speed, high f-stop) to avoid a double exposure and then advance the film again (feeling the tension as the film is moved) for the next shot. –  whuber Nov 20 '13 at 13:29

It depends on how far it rewound and if it rewinds frame at a time or not. Film doesn't have frames, it's just one long continuous strip and each advance pushes it far enough ahead to avoid exposing over the last image. If the rewind has disengaged the film without rolling it back frame by frame, then you will have to advance a frame or two beyond where you were to ensure you are on unexposed film. If it supports going back exactly one frame, then you should be ok to simply take a photo with the lens cap on (black) and then advance as normal.

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A quote from @whuber - "pressing the rewind button disengages the film advance mechanism." Nothing else happens if there is no motorized drive. More about rewind release button in double exposure question/answers. –  Esa Paulasto Nov 20 '13 at 17:44
    
@EsaPaulasto - looking in to it a bit further it does appear that this particular camera does not have a rewind motor, so it's probably ok, but I wouldn't be sure that the pressure from the film might not have caused it to slide back a little. I'd probably still advance an extra frame to be safe. I recall some of my cameras allowing the film to slip by a notch or two when the release was pressed. –  AJ Henderson Nov 20 '13 at 18:27

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