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Photo Forum / Film Photography / Medium format / September 2003How much do I lose by forgetting to rewind?
If I forget to rewind an A12 back before opening it, about how many frames can I expect to lose? I'd guess not more than two ... right? Also, if I do this, how do I get the back to let me turn the crank until the film is rewound (since it seems to reset and assume that putting the insert back in means that you are loading a fresh roll)? In my case I ran through twelve "exposures" just to advance the film, then took it out again.  SignatureTranspose hotmail and mxsmanic in my e-mail address to reach me directly. Hmmm, the A12 back doesn't require 'rewinding'... what you are doing is finishing moving the film and paper on to the take-up reel. I'd guess you're about right with two frames exposed to light.. Once you reinsert the insert and lock it in the A12 back, you should be able to wind it until you feel a reduced tension. Then take it out as usual. When you take it out, the counter resets again and is ready to be loaded with a fresh roll - after moving the spool to the 'take up' position, of course. > If I forget to rewind an A12 back before opening it, about how many > frames can I expect to lose? I'd guess not more than two ... right? [quoted text clipped - 4 lines] > ran through twelve "exposures" just to advance the film, then took it > out again. > Hmmm, the A12 back doesn't require 'rewinding'... what you are doing is > finishing moving the film and paper on to the take-up reel. Well, you know what I mean. When I removed the insert I saw the tail end of the emulsion still only about half way across the film plate, and I knew I had forgotten to wind up the film on the take-up reel. > I'd guess you're about right with two frames exposed to light.. > Once you reinsert the insert and lock it in the A12 back, you > should be able to wind it until you feel a reduced tension. > Then take it out as usual. I tried that, but apparently taking out the insert resets something, and when I put it back in, I could only wind it a certain distance, then it stopped--as it does when positioning a fresh roll to the first exposure. In my confusion it did not occur to me that I could simply wind the remaining film manually onto the take-up spool. SignatureTranspose hotmail and mxsmanic in my e-mail address to reach me directly. > [...] Hey Genius! Read the friggin manual. You don't need a college degree for that. > Hey Genius! Read the friggin manual. You don't need > a college degree for that. The manual doesn't contain a procedure for the mistake I made, as far as I know. SignatureTranspose hotmail and mxsmanic in my e-mail address to reach me directly. >> [...] > > Hey Genius! Read the friggin manual. You don't need a college degree for > that. Pathetic.... SignatureStacey > >> [...] > > > > Hey Genius! Read the friggin manual. You don't need a college degree for > > that. > > Pathetic.... You have some kind of agenda? Speak up. > You have some kind of agenda? Speak up. Oo-wee-oo! SignatureTranspose hotmail and mxsmanic in my e-mail address to reach me directly. >> >> [...] >> > [quoted text clipped - 4 lines] > > You have some kind of agenda? Speak up. You seem to... He asked a simple question (does the manual explain how many frames are lost or how to deal with this user mistake?) and you THROW this college degree stuff back into it. SignatureStacey > > > You have some kind of agenda? Speak up. > > You seem to... He asked a simple question (does the manual explain how many > frames are lost or how to deal with this user mistake?) and you THROW this > college degree stuff back into it. Oh that. Yeah, I was crossing subjects. Mixmaster's trolling got me. >> >> > You have some kind of agenda? Speak up. [quoted text clipped - 4 lines] > > Oh that. Yeah, I was crossing subjects. Mixmaster's trolling got me. Oh I don't think he's trolling, it's just there is zero point in argueing with him if you =think= you are going to change his mind. Don't need a college degree to figure that one out. :-) SignatureStacey > If I forget to rewind an A12 back before opening it, about how many > frames can I expect to lose? I'd guess not more than two ... right? Sounds about right. I opened the back on my pentacon once after I wound off the last frame without winding the roll off and lightly fogged the edges of the last two frames. Some of it was still useable.. > Also, if I do this, how do I get the back to let me turn the crank until > the film is rewound (since it seems to reset and assume that putting the > insert back in means that you are loading a fresh roll)? By the time you wind it to the 1st frame, it should all be on the takeup spool. SignatureStacey > > Also, if I do this, how do I get the back to let me turn the crank until > > the film is rewound (since it seems to reset and assume that putting the > > insert back in means that you are loading a fresh roll)? > > By the time you wind it to the 1st frame, it should all be on the takeup > spool. And should the back block before, why not open it again? There's no need to be afraid that fogged parts will be "overfogged". > And should the back block before, why not open it again? There's no need to > be afraid that fogged parts will be "overfogged". It has occurred to me that I could just wind it by hand on the insert. I don't know that putting the insert back into the film back would really offer much additional protection by that point. SignatureTranspose hotmail and mxsmanic in my e-mail address to reach me directly. >Sounds about right. I opened the back on my pentacon once after I wound off >the last frame without winding the roll off and lightly fogged the edges of >the last two frames. Some of it was still useable.. Subsidiary question, Stacey: how many winding movements do you find you need after exposing the last shot, to ensure that the film is fully wound onto to the take-up spool: - for your P6 and - for your K60? In both instances, I've never been game to wind less than 7/8 times, but I have the feeling that this may be excessive. >>Sounds about right. I opened the back on my pentacon once after I wound >>off the last frame without winding the roll off and lightly fogged the [quoted text clipped - 12 lines] > In both instances, I've never been game to wind less than 7/8 times, > but I have the feeling that this may be excessive. Never counted. It's ussually pretty easy to feel when it gets easier which means it's wound onto the takeup spool. SignatureStacey You lose about 2 or 3 frames. > If I forget to rewind an A12 back before opening it, about how many > frames can I expect to lose? I'd guess not more than two ... right? [quoted text clipped - 4 lines] > ran through twelve "exposures" just to advance the film, then took it > out again. > You lose about 2 or 3 frames. I figured two at most. Three is 25% of the roll, which doesn't make me happy (that's about €6-€7 shot). Thanks for the info, though. I guess I'll find out when I develop it. SignatureTranspose hotmail and mxsmanic in my e-mail address to reach me directly. From: Mxsmanic Apparently this kinda shook you up a little when you saw the film was not wound all the way onto the take up spool. On thing that you can do, and not have to remember any thing technical at all. Is to remount the back onto your camera, pull the darkslide, put the lens cap on the lens, trip the shutter, wind, trip, wind, trip. This will will finish winding the film onto the take up spool. And is simple to remember. (:>) Of course the best solution to this is remember to wind the film all the way immediately after the last photo. But We are all human, and make mistakes. Hope this helps. Lauvone www.lauvone.com > Apparently this kinda shook you up a little when you saw the film was not wound > all the way onto the take up spool. It does send an icy chill down the spine, the intensity of which varies with the value of the shots on that roll. > On thing that you can do, and not have to remember any thing technical at all. > Is to remount the back onto your camera, pull the darkslide, put the lens cap > on the lens, trip the shutter, wind, trip, wind, trip. This will will finish > winding the film onto the take up spool. And is simple to remember. (:>) Hmm ... not a bad idea. I did not have the presence of mind to think of that at the time. SignatureTranspose hotmail and mxsmanic in my e-mail address to reach me directly. > > Apparently this kinda shook you up a little when you saw the film was not wound > > all the way onto the take up spool. > > It does send an icy chill down the spine, the intensity of which varies > with the value of the shots on that roll. Rexlax. The chances that you had anything at all worthwhile on that roll are almost nil. > Rexlax. The chances that you had anything at all worthwhile on that roll > are almost nil. It was not a critical roll, but there are obviously shots I'd like to see, anyway. Each exposure costs about €2 in film and development, and far more than that in time. SignatureTranspose hotmail and mxsmanic in my e-mail address to reach me directly. > I figured two at most. Three is 25% of the roll, which doesn't make me > happy (that's about ?6-?7 shot). Thanks for the info, though. I guess > I'll find out when I develop it. Please let us know when you have. |
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