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Pinholes

  • From: P3D John Slivon <frogs@xxxxxxxxxx>
  • Subject: Pinholes
  • Date: Sun, 23 Mar 1997 17:52:15 -0600
John Fairstein wrote:

>Do pinholes have different focal lengths?

Sure do, however, the focal length of each "pinhole" camera has an optimal
pinhole diameter. In other words the optimal pinhole diameter for a 150mm
bellows extension is different from the optimal pinhole diameter of a 270mm
bellows extension. Up to a point, the longer the bellows extension, the
larger the hole.

J.Slivon


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