The recent discussion re the circle and vignetting and falloff leads me to
post this.
I have been using this camera [upload gallery
http://www.pinholevisions.org/discussion/upload/
gallery2002.php?pic=donahoe_camera.jpg ] and others like it for about 12
years now. I wouldn't think of using anything else for doing pinhole work.
The barrel is about 6" though others I use are 4 1/2" and 3" focal lengths,
a good range of 'tele', 'normal' and 'wide' angle; no issues of falloff or
change of density as you approach the edges since only a small part of the
optical 'circle' is used. The pinholes were made by using either a #10 or
#12 sewing needle - sorry no laser drilled exactitude :-) and a tip of the
hat to Jim Shull's book too.
I began using these cameras as I am sure most people on the list have: to
get back to a simpler more direct means of making photographs. But trying to
compose on the circle rather than the rectilinear frame and anticipating
what may fall within the field of vision - how to use the near foreground
and sky - has kept me with them.
For an example of my work with this camera see the gallery at
Pinholeformat.com [http://www.pinholeformat.com/peterdgal1.html ]
Embrace the Great Circle in the Little Box!
Peter Donahoe
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Received on Fri Nov 15 10:22:52 2002
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