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| Making a Large Format Camera |
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| S. Heslop:
My uncle asked me if it wouldn't be too much hassle to make a pinhole camera that takes 5"x7" film, and was probably thinking of just a box with a hole in it. But I can't seem to help but make things as unnecessarily complicated as possible. I spent a while thinking about what features I myself would want in a camera, and decided the two big ones i'd want would be a way to take more than one shot without needing to use a changing bag/ dark room to replace the film, and also the ability to change the focal length. So after deciding the best way to take multiple shots would be large format style film holders, and a bellows extention would be the best way to change the focal length, I effectively ended up with a design for a chunky over-built large format camera. Most of it will be made from wood, but to try escape the monotony of wood I'm going to have a go at casting the parts for the round rail it all mounts to. I'm a little unsure about the mechanism for focussing. I'm sure i've seen something like this before, with a tapered wheel driving a bar. No idea what they call this sort of thing though. Today I got some of the wood cut. I really made a mess of the process and wasted more oak than I'd have liked. I've got to be honest i've really gotten tired of woodwork lately. After i'm done with this project i'm thinking I might try sell a bunch of the tools I could live without and then buy a milling machine. |
| DavidA:
Just thinking. Couldn't you use A4 photographic print paper to produce a large negative image. Then use a modern printer to convert it to a digital positive for viewing ? Dave. |
| S. Heslop:
--- Quote from: DavidA on July 31, 2016, 02:43:26 PM ---Just thinking. Couldn't you use A4 photographic print paper to produce a large negative image. Then use a modern printer to convert it to a digital positive for viewing ? Dave. --- End quote --- That's my uncle's plan actually, using A3 photographic paper. It'd be a hell of a lot cheaper than trying to use regular film, that's for sure. |
| efrench:
Xray film is another inexpensive option. Have you visited http://www.f295.org? |
| chipenter:
An enlarger lens is another option . |
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