RE: [pinhole-discussion] Polaroid Pack Film Mechanics?
I believe the 553 fits a 550 back. They show up on ebay frequently are WONDERFUL. I like them much more than the single sheet backs the film is about 1/2 the price of single sheets. I picked up a couple of them so I can load several type of film...still cheaper than single sheet... You might find one used at a photo shop. There was a rumor last winter about the demise of the 550 style of film but my Polaroid rep has assured me it is false... for what thats worth... enjoy andy -Original Message- From: pinhole-discussion-admin@p at ??? [mailto:pinhole-discussion-admin@p at ???]On Behalf Of Philip willarney Sent: Thursday, October 03, 2002 1:58 AM To: pinhole-discussion@p at ??? Subject: Re: [pinhole-discussion] Polaroid Pack Film Mechanics? --- michael_georg...@trendmicro.com wrote: ..snip.. So, here I am with many, many boxes of Polaroid 553, Polapan ASA100 4x5 pack film, and no way to use it (yet). I can build a camera out of any damn thing, but a homemade Polaroid back presents a bit more of a challenge. ..snip.. I'm not clear on what you've got: * 4x5 polaroid single sheet film (where each film is in a separate light tight paper sleeve)-- I think you could fake a back with this type: you dummy up a back where you slide the sheet in, the catch catches on something inside so you can (partly) pull the paper sleeve out, take your exposure, slide the paper sleeve back in, release the catch, pull the whole thing out, and use a rolling pin from the fat end to spread out the chemicals. I got a back to do this for $40 at the last camera show I went to. * 4x5 pack film -- I didn't know they made pack film in this size, but they apparently do! This looks like it would be harder to fabricate -- the pack itself does most of the work (keeping negative positive separate, bringing them together as you pull the tabs out though the rollers) -- but the rollers need to be hard, clean, and pretty precise (right size, right spacing, right tension) to work well, and the places where the tabs pop out would take some thought to dummy up. Some of the cheapie polaroids used spreader bars rather than rollers, and this might be easier to fabricate -- basically it's two smooth slabs of metal held almost, but not quite, together with a heavy spring. The film is pulled through the bars and they pop the chemical pod and spread it out... -- Philip __ Do You Yahoo!? Yahoo! Autos - Get free new car price quotes http://autos.yahoo.com ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
Re: [pinhole-discussion] Polaroid Pack Film Mechanics?
--- michael_georg...@trendmicro.com wrote: ..snip.. So, here I am with many, many boxes of Polaroid 553, Polapan ASA100 4x5 pack film, and no way to use it (yet). I can build a camera out of any damn thing, but a homemade Polaroid back presents a bit more of a challenge. ..snip.. I'm not clear on what you've got: * 4x5 polaroid single sheet film (where each film is in a separate light tight paper sleeve)-- I think you could fake a back with this type: you dummy up a back where you slide the sheet in, the catch catches on something inside so you can (partly) pull the paper sleeve out, take your exposure, slide the paper sleeve back in, release the catch, pull the whole thing out, and use a rolling pin from the fat end to spread out the chemicals. I got a back to do this for $40 at the last camera show I went to. * 4x5 pack film -- I didn't know they made pack film in this size, but they apparently do! This looks like it would be harder to fabricate -- the pack itself does most of the work (keeping negative positive separate, bringing them together as you pull the tabs out though the rollers) -- but the rollers need to be hard, clean, and pretty precise (right size, right spacing, right tension) to work well, and the places where the tabs pop out would take some thought to dummy up. Some of the cheapie polaroids used spreader bars rather than rollers, and this might be easier to fabricate -- basically it's two smooth slabs of metal held almost, but not quite, together with a heavy spring. The film is pulled through the bars and they pop the chemical pod and spread it out... -- Philip __ Do You Yahoo!? Yahoo! Autos - Get free new car price quotes http://autos.yahoo.com
Re: [pinhole-discussion] Polaroid Pack Film Mechanics?
- Original Message - From: Gordon J. Holtslander hol...@duke.usask.ca Polaroid makes a pinhole camera kit - I wonder if your film would work with it? Gordon: If I am not mistaken, the Pol-Pin takes 3.25x4.25 packs same as the ones the holder 405 uses. The famous pos-neg 665 is one example of those kinds of films. BTW, Michael, what about renting a Pol 550 back for a day and shooting away as if there is no tomorrow, until all boxes are gone!! Guillermo
Re: [pinhole-discussion] Polaroid Pack Film Mechanics?
Michael, This site may help you understand how a Polaroid pack works: http://www.theskeltons.org/polaroids/film.htm Guillermo - Original Message - From: michael_georg...@trendmicro.com Anyone have any experience with the mechanics of Polaroid pack film? = So, here I am with many, many boxes of Polaroid 553, Polapan ASA100 4x5 pack film, and no way to use it (yet). I can build a camera out of any damn thing, but a homemade Polaroid back presents a bit more of a challenge.
Re: [pinhole-discussion] Polaroid Pack Film Mechanics?
Polaroid makes a pinhole camera kit - I wonder if your film would work with it? See: http://www.polaroid.com/products/product_detail.jsp?PRODUCT%3C%3Eprd_id=381243FOLDER%3C%3Efolder_id=352851bmLocale=en_USPRDREG=POLSOURCE=catalog and the guide to using it: http://www.polaroid.com/service/userguides/photographic/pinhole_ug.pdf On Wed, 2 Oct 2002 michael_georg...@trendmicro.com wrote: Lots of people have found old polaroid cameras and converted them to pinhole - chop the lens off and add a pinhole :) Gord pinhole-discussion@p at ??? Anyone have any experience with the mechanics of Polaroid pack film? I came across many, many boxes of slightly outdated Polaroid 553 film at a photoswap, and I bought it, thinking it was some other size, as I was not paying close attention... But, I get home and discover my error: I have no camera to use with this film. So, here I am with many, many boxes of Polaroid 553, Polapan ASA100 4x5 pack film, and no way to use it (yet). I can build a camera out of any damn thing, but a homemade Polaroid back presents a bit more of a challenge. I found a packfilms_guide.pdf on the Polaroid site, and this guide says, ... After an exposure is made, pulling the white tab all the way out moves the exposed negative from the focal plane behind the lens to a position facing the positive sheet. Simultaneously, the larger tab of the film is positioned between the rollers, and sticks out of the camera or film holder where it can be grasped I can figure out a back to contain the pack, and I suppose I can accomodate the black and white tab slots, and I suppose I can figure out a way to make rollers, but I'm a surprised that the negative actually moves to make contact with the positive before being extracted through the rollers to break the pod, etc... I've stared deeply into an old Polaroid 250 to figure out how it works, but I'm wondering if there is more to it than meets the eye... especially with the negative moving into place. Anyone ever done a hack to use pack film? Any advice? The film was cheap, and I don't want to invest in a $50 or $100 back, I just want to figure out how to use the film! Thanks, Michael Georgoff San Jose, CA ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/ - Gordon J. Holtslander Dept. of Biology hol...@duke.usask.ca112 Science Place http://duke.usask.ca/~holtsgUniversity of Saskatchewan Tel (306) 966-4433 Saskatoon, Saskatchewan Fax (306) 966-4461 Canada S7N 5E2 -
