On Mon, 12 Nov 2001, Steve Goldstein wrote: > I've been pondering the issue of the size of the back box and the > apparent limitations it imposes on front movements. This seems to > me to be a consequence of the bellows mounting arrangement - if > the mount intrudes, say, 1/2" from the inner dimensions of the > back, then at some point of front movement this will begin to cause > shadowing of one of the film edges. The solution would seem to be > making the back dimensions larger (and the weight heavier).
It sort of sounds like you are assuming the back standard to be the size of the film? Perhaps I'm missunderstanding you? In any case, you have figured out the solution. Yes, the camera back has to be big enough to attach the bellows, the ground glass, and the mechanism to hold the film pack in place. How much bigger kind of depends on how you as the designer plan to put it all together. In any case, as long as the rear bellows opening is at least as large as the film you shouldn't really have a problem. > I haven't seen any discussion of this in any of the materials I've > acquired to date regarding the design and construction of view > cameras. Is this a real consideration, or in practice are movements > never (or seldom) so extreme as to require concern? At the moment I don't really see the problem. Usually the bellows dimensions are bigger than the film size and the lens opening is relatively small. Movements so extreme that the bellows gets in the way will likely have already exceeded the coverage that the lens can provide. Of course, there may be an exception to this. I'm just typing this off the cuff, but I can't think of the exception. If at all possible you might want to see if you can look at a view camera at a camera store, or maybe even rent one for a weekend to play with. I found that to be useful before building my camera. - Wayde ([EMAIL PROTECTED]) _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
