John Pendley <jpendley@xxxxxxxxxxxxx> moved upon the face of the 'Net and spake
thusly:
> This reminds me. I've seen a chart showing the angles of view of various
> lenses, but I can't remember where. Can anybody help?
half-angle of view = arctangent ( film-size / (2 * f))
24mm lens? Full horizontal angle of view?
2*atan(36/48) = 74 degrees
The formula breaks down for extreme wide angle lenses.
cjb.
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