On Friday, January 31, 2003, at 10:26 AM, Jan Steinman wrote:
Keep in mind that the relationship between focal length and angle of
view is non-linear. Small changes at the wide end can be dramatic.
Really?
50mm - 47 degrees
35mm - 63 degrees
28mm - 75 degrees
24mm - 84 degrees
21mm - 92 degrees
18mm - 100 degrees
Looks sort of linear to me. If anything the change becomes less
dramatic as you get wider. Otherwise you would expect a 24mm lens to
be about 94 degrees.
Of course that applies to conventional lens design. Fisheyes are a
different kettle of fish. :-)
Winsor Crosby
Long Beach, California, USA
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