ARTHURWG@aol.com
Date: 12/18/02-07:30:42 PM Z
It seems that for pinhole photography, "the definition improves as the
aperture increases: but in the absence of a lens the augmented aperture
entails a greatly extended focal length. The limits of an ordinary portable
camera are thus soon passed."
John William Strutt, writing in 1891, goes on to say that his darkened
room-sized pinhole camera used an aperture of .07" to expose a 10x12 plate,
at a distance of 7 feet. "The resulting picture of a group of cedars shows
nearly as much detail as could be seen direct from the place in question."
This archive was generated by hypermail 2.1.5 : 01/31/03-09:31:26 AM Z CST