This can be easily done with a Bolex using different c-mount hollow cylinders with a thin top where the pinhole is. One of the cylinders can have a low top close to the bottom of the threads giving it a focal length about 18mm. The aperture can be determined as the square root of (55*FocalLength).
One can have a set of such cylinders that go on the turret.
Another interesting idea is to have two pinholes slightly displaced off the center and each convered with a thin gel with different colors like red and blue. Would not this give a stereo effect?
I think you are talking about C-mount extension tubes. Been meaning to get a set for my Bolex. The two pinhole idea is interesting and I can try it with my Bolex Rx5 with the Stevens animation motor on it. The motor exposes a frame at around 1/3 to 1/2 second which might be enough with fast film to get images through a pinhole. Something I can plan on doing in the near future. Got to shoot some tests of my stop-motion armature first.
Herb Montes wrote:I think you are talking about C-mount extension tubes. Been meaning to get a set for my Bolex. The two pinhole idea is interesting and I can try it with my Bolex Rx5 with the Stevens animation motor on it. The motor exposes a frame at around 1/3 to 1/2 second which might be enough with fast film to get images through a pinhole. Something I can plan on doing in the near future. Got to shoot some tests of my stop-motion armature first.
It will work with the extension tubes and custom made tops with precise pinholes made for each 'focal length.' On second thought I do not think stereo will work because of the diffused quality of the image that lacks a well defined border.
These are two pictures taken in Austin, Texas with a pinhole camera by Gary Nored. He makes his own pinhole cameras. Very nice!
