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4 Days Ago   #1
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Pentax 645 film doesn't rewind after 15 shots

Just bought used pretty good condition pentax 645. First roll I shot it the film rewinded no problem. But the rest ive shot since It doesn't rewind and I've just had to click the shutter another 15-20 times and then I can take the back out with and it is wound up. It never does any rewinding though. Also when I try to do the manual rewind with the screw from the bottom that doesnt seem to work either it just keeps going and going (ive done it for along time) and film is still exposed. The only thing that works is firing the shutter off a dozen or more so times after 15 then it is wound up. I am using brand new batteries to seen alot of people saying things about batteries.

4 Days Ago   #2
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You should be getting 16 15 shots on the 645* before it finishes winding off to the take-up reel after the last exposure. You should be able to remove the film holder at that point to find the film fully wound onto the take-up spool. Are you sure you are loading it properly and using the 120 rather than the 220 film holder? I am also a bit confused regarding a manual wind screw. Your camera does not support that. Do you have a copy of the user manual?

Pentax Manuals | Medium Format


Steve

* The 645n and later models got 16 exposures per roll.

Last edited by stevebrot; 4 Days Ago at 09:50 PM. Reason: accuracy
4 Days Ago - 1 Like   #3
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Also, please note that (unlike 35mm film), in normal use, it doesn't rewind - as you use up the film, it merely winds onto the second reel (which you remove for processing), leaving the reel that the new (unexposed) film was on empty - which you then move into the position of the reel that had contained the exposed film. By this means, you are always winding film onto the reel that was freed up by the previous film. The only time you ever need to rewind is if you are removing a film that has been incompletely used so that you can then wind it back to the same position another time and then use it up.
4 Days Ago   #4
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As explained on Photrio, on the left the back is configured for 120 and on the right for 220 films.




Last edited by fs999; 2 Days Ago at 08:19 AM.
3 Days Ago   #5
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BTW...Welcome to the Pentax Forums!


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3 Days Ago   #6
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@jmacy9109 ... Aha! I knew this problem sounded familiar! Below is a link to a similar problem posted to the troubleshooting section of this site. I believe the information you need will be found there.

645n not rewinding after 16 frames - PentaxForums.com

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3 Days Ago   #7
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QuoteOriginally posted by stevebrot Quote
YI am also a bit confused regarding a manual wind screw. Your camera does not support that. Do you have a copy of the user manual?

Pentax Manuals | Medium Format
QuoteOriginally posted by Ed Hurst Quote
Also, please note that (unlike 35mm film), in normal use, it doesn't rewind - as you use up the film, it merely winds onto the second reel (which you remove for processing), leaving the reel that the new (unexposed) film was on empty - which you then move into the position of the reel that had contained the exposed film. By this means, you are always winding film onto the reel that was freed up by the previous film.
The manual wind screw on the 645 is for manually advancing (not rewinding) the film and actuating the shutter if you lose power. But as others have written, the 645 does not rewind. The unexposed fresh film is advanced onto the empty reel, and then after removing the film, you put the empty reel that had fresh film into the take up position for the next reel.
3 Days Ago - 1 Like   #8
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QuoteOriginally posted by Alex645 Quote
The manual wind screw on the 645 is for manually advancing (not rewinding) the film and actuating the shutter if you lose power.
Thanks for the clarification. I have hands-on with the 645n, but not the 645 and your comment sent me back to that model's manual where I did find the section on manual wind. My bad.


Steve

2 Days Ago   #9
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QuoteOriginally posted by stevebrot Quote
Thanks for the clarification. I have hands-on with the 645n, but not the 645 and your comment sent me back to that model's manual where I did find the section on manual wind. My bad.
Steve
No worries. I have both the 645 and 645N. Often I err on 645N info assuming it has functions only found on the 645. Pentax made some significant changes between models.
14 Hours Ago   #10
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Got back some pics from the rolls. looks like im having winding issues
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12 Hours Ago   #11
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Winding or shutter issues?
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