[LRflex] Angle of View table
- From: wildlightphoto@xxxxxxxxxxxxx
- To: leicareflex@xxxxxxxxxxxxx
- Date: Fri, 25 Jan 2008 20:44:06 -0800 (GMT-08:00)
Herewith a handy diagonal Angle of View (AV) table for several popular focal
lengths on a 35mm film camera (lens focussed at infinity). The AV is
approximate because actual focal lengths often deviate somewhat from nominal.
15mm lens = AV-110
19mm lens = AV-95.7
21mm lens = AV-92
24mm lens = AV-84
28mm lens = AV-76
35mm lens = AV-64
50mm lens = AV-45
60mm lens = AV-40
80mm lens = AV-29
90mm lens = AV-27
100mm lens = AV-22.5
180mm lens = AV-14
200mm lens = AV-12.5
250mm lens = AV-10
280mm lens = AV-8.8
400mm lens = AV-6
560mm lens = AV-4.4
For a smaller format, divide the above AV values by the crop factor, i.e.,
for the 60mm Macro-Elmarit-R on the DMR the AV is 40/1.37 = about 29
Doug Herr
Birdman of Sacramento
http://www.wildlightphoto.com
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