RE: [pinhole-discussion] Camera Design Problem
is the film plane curved towards or away from the pinhole? is the radius on the 4" or 11" side of the paper? if it's curved away it should be "fairly" easy to construct removable backs like Max suggested. The only part that may be tricky would be the joint. You might want to put a stop on the dark slide to prevent it from being totally removed. The stop might also be useful to help seal up the slide opening for long exposures. The down side is the dark side flopping around. andy -Original Message- From: pinhole-discussion-admin@p at ??? [mailto:pinhole-discussion-admin@p at ???]On Behalf Of HypoBob Sent: Wednesday, December 13, 2000 1:45 PM To: pinhole-discussion@p at ??? Subject: [pinhole-discussion] Camera Design Problem Group, I have been making pinhole images on 4x11 inch paper negatives mounted on a film plane with a 5 inch radius of curvature. The results have been very satisfying, but the aggravation of running back to the darkroom to unload and reload after each exposure is getting to me. I would like to modify the camera so that it holds five or six negatives that can be moved into place without having to open the camera under darkroom conditions. Does anyone have any clever ideas about how to manipulate these largish negatives onto and off of a curved film plane? (I would like to do this entirely within the camera without the use of changing bags or portable darkrooms.) I saw one design with flat negatives that were on hinged plates that could be pulled up into position with strings that were fed through the camera body. Great idea, but it does not lend itself to anamorphic designs with their curved film mounting. My first design was a complete flop, and I have a couple of other rudimentary ideas, but before wasting more and more hours on approaches that may have no hope of success, I thought I would do a "literature search" to see if anyone in this group knows of a viable approach. Thanks, Bob ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/
RE: [pinhole-discussion] Camera Design Problem
-Original Message- From: pinhole-discussion-admin@p at ??? [mailto:pinhole-discussion-admin@p at ???]On Behalf Of Max Isbill Sent: Wednesday, December 13, 2000 2:19 PM To: pinhole-discussion@p at ??? Subject: Re: [pinhole-discussion] Camera Design Problem How about a camera with interchangeable curved backs that could be loaded in the darkroom. Maybe to make it easier to build make the back flat where it joins the camera and where the dark slide goes in. Max At 10:44 AM 12/13/00 -0800, you wrote: >Group, > >I have been making pinhole images on 4x11 inch paper negatives mounted on a film plane with a 5 >inch radius of curvature. The results have been very satisfying, but the aggravation of running >back to the darkroom to unload and reload after each exposure is getting to me. > >I would like to modify the camera so that it holds five or six negatives that can be moved into >place without having to open the camera under darkroom conditions. > >Does anyone have any clever ideas about how to manipulate these largish negatives onto and off >of a curved film plane? (I would like to do this entirely within the camera without the use of >changing bags or portable darkrooms.) > >I saw one design with flat negatives that were on hinged plates that could be pulled up into >position with strings that were fed through the camera body. Great idea, but it does not lend >itself to anamorphic designs with their curved film mounting. > >My first design was a complete flop, and I have a couple of other rudimentary ideas, but before >wasting more and more hours on approaches that may have no hope of success, I thought I would do >a "literature search" to see if anyone in this group knows of a viable approach. > >Thanks, >Bob > > >___ >Pinhole-Discussion mailing list >Pinhole-Discussion@p at ??? >unsubscribe or change your account at >http://www.p at ???/discussion/ > ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.p at ???/discussion/
Re: [pinhole-discussion] Camera Design Problem
How about a camera with interchangeable curved backs that could be loaded in the darkroom. Maybe to make it easier to build make the back flat where it joins the camera and where the dark slide goes in. Max At 10:44 AM 12/13/00 -0800, you wrote: >Group, > >I have been making pinhole images on 4x11 inch paper negatives mounted on a film plane with a 5 >inch radius of curvature. The results have been very satisfying, but the aggravation of running >back to the darkroom to unload and reload after each exposure is getting to me. > >I would like to modify the camera so that it holds five or six negatives that can be moved into >place without having to open the camera under darkroom conditions. > >Does anyone have any clever ideas about how to manipulate these largish negatives onto and off >of a curved film plane? (I would like to do this entirely within the camera without the use of >changing bags or portable darkrooms.) > >I saw one design with flat negatives that were on hinged plates that could be pulled up into >position with strings that were fed through the camera body. Great idea, but it does not lend >itself to anamorphic designs with their curved film mounting. > >My first design was a complete flop, and I have a couple of other rudimentary ideas, but before >wasting more and more hours on approaches that may have no hope of success, I thought I would do >a "literature search" to see if anyone in this group knows of a viable approach. > >Thanks, >Bob > > >___ >Pinhole-Discussion mailing list >Pinhole-Discussion@p at ??? >unsubscribe or change your account at >http://www.p at ???/discussion/ >
