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photo: Polaroid 600/SX-70 => film mod? Answered

I'm wondering if anyone is aware of attempts to use standard process film in a modified Polaroid 600 or One Step type camera... These things are a dime a dozen at Salvo and other such stores -- I'm curious as to an adaptation to, let's say, 120 type film, is possible. Anyone have ideas? The first 600 I just tried to take apart is now in shambles, those puppies do NOT come apart easily that I can tell. Any ideas would be much appreciated. Still attempting to iron out bugs with Kodak Instamatic modification, so far 3 have been murdered in the process.

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photozz (author)2007-01-03

that would be a serious hack to attempt. The main issue I can see is that the battery for driving all the electronics is in the film pack. you would have to replicate this somehow, and then fabricate a film stage at precisely the right plane and angle. Not to mention the roll mechanism. Then you have to get it light tight. it would be easier to pull the optics out of the camera and build something by hand instead of adapting the existing chassis.

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peterrabid9 (author)photozz2007-01-03

I agree and understand completely, but I have a great love for lessons in futility. So far, the hardest part has been getting the friggin camera apart. So far I can tell, the hardest part is going to be getting the film to stay in that plane... still under consideration though. I picked up an SX-70 type instant today, maybe that would be more suitable due to the closer ISO speeds (my personal favorite being Plus-X at 125 matches closely). Any other thoughts would be appreciated, the things you mentioned occurred to me late last night. How serious is the issue of adapting optics to film sizes? I imagine distance from the lens to the film plane is the biggest concern. Thanks for the reply, I'll keep the world posted, I suppose.

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photozz (author)peterrabid92007-01-04

well, if you can get the film to the same plane as the existing film pack, the focus and such would work fine. If you want to try and adapt the focus to a different film size, that would involve moving the stage, and recalibrating the focus, which I don't think would even be possible. You will need to rewire the electronics for a battery pack of some kind, unless you can find an older model that takes AA batteries already. I believe the standard 600 type film pack delivers 6v, so you could use a 9v with a 6v regulator, or 4 AA batteries..

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peterrabid9 (author)photozz2007-01-06

Thanks for replying, it's good to know someone can imagine how difficult this is might be, and can help trouble shoot it. I stayed up late last night and started mapping the break-down procedure for the 600 OneStep style, which I will post some point for... whoever wants it. I think if I stick to a reel-to-reel build, one of the spools is going to have to sit outside the body, either on the back or the front. Ideally, i want to use the top half of the film pull-through as an advance mechanism for the 120 (take-up, naturally). 600 type I am sure will also require higher ASA film, like 400 speed, for better exposure, without monkeying with the circuitry like I have seen on other sites. I have one SX-70 OneStep I'm going to modify in time, but the first attempt will be a cheaper and easier version. So far, I've got the guts operating without the outer casing, which helps me understand how the mechanics work to a degree. A friend gave me a bunch of the old battery packs from the cartridges, so I hotwired one to the thing so I could run it sans cartridge. For power source, AA's seem to be best bet since they're user-serviceable, and 6V is dead on. The whole point of this venture is to make this something other people could do if inclined, so I don't want this to be a truly complicated process. I know the exposures won't be dead on the film, and that's okay -- this is a silly undertaking in an effort to make kooky medium-format cameras out of junkstore specials. On that note, do you think this might be worth attempting with larger 4x5 inch sheet negative? Light management would be the biggest issue, I would imagine. Thanks again for the advice, I'll take what I can get.

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photozz (author)peterrabid92007-01-04

to help with the 120 film, look for spare MAMIYA or such interchangeable roll film backs from ebay.. You can sometimes find them cheap. That would take care of keeping it mostly light tight, as well as how to actually "roll" the film forward. .. http://cgi.ebay.com/MAMIYA-RZ67-PROFESSIONAL-120-FILM-BACK-EXC-0103_W0QQitemZ260071369883QQihZ016QQcategoryZ29973QQrdZ1QQcmdZViewItem

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