----- Original Message ----- From: "Benno Jones" <[email protected]>
> I recently came into possession of a 5x7 dark slide that has been cut in > half to give to approx. 6x17 exposures on a 5x7 piece of film. I have a > fairly decent 5x7 camera (Kodak 33a) and would like to use the setup to > make some pinhole panoramas. However, once I fashion a pinhole > lensboard, I'm worried that falloff towards the edges will result in a > sort of 'half-dome' effect on the photos that won't look so hot > (especially on the bottom half of the film. So my plan is to make the > pinhole off-center on the lensboard and flip it for each exposure. As I In principle that idea would work. The idea is that a normal from the pinhole to the film plane should lay right in the center of the 1/2 5x7 frame. This may be unattainable just by flipping the lens board, it may require recurring to raise/fall movements, also. > am very inexperienced at making my own pinhole cameras (even as limited > as this - I use a Zero2000, a Leonardo and a Nikon pinhole body cap), I > feel a need for outside input. This leads me to ask the group for any > comments. Are my falloff fears fraudulent? Anything else I should take > into consideration? Fears may or may not be unfounded, it depends on the focal length of your set-up. If you don't want fall-off (or much of it, anyway), aim for an image angle of 120 degrees or less. Guillermo
