A Short Course Book Displaying & Sharing Your Digital Photos
Pin Hole Photography  This Finney slide bar pinhole/zone plate
combines a pinhole and a zone plate. A zone plate uses dark
rings to diffract light. The Diana is a cheap plastic film
camera favored by many artists.  It seems like we should end
this chapter on a topic— pinhole photographywhere you replace
the very expensive lens on your camera with a hole the size of a
pin. Surprisingly, lenses are not actually needed to take a
picture. You can even make a camera out of a shoebox with a
small hole in one end and film in the other. Known as a pinhole
camera, this primitive device can focus an image and record it
on film. To make a photograph, the box is loaded in the dark
with a light-sensitive film and the pinhole is covered with
opaque tape. Peeling the tape back (much like a shutter) to
uncover the pinhole (much like a lens aperture) begins the
exposure, recovering the pinhole ends it. The exposed film is
then removed in a darkroom and the image de