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Re: [OM] Flash and wide angle lenses

Subject: Re: [OM] Flash and wide angle lenses
From: Christopher Biggs <chris@xxxxxxxxxxxxxx>
Date: 07 Feb 2000 12:13:39 +1000
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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| R&D Software Engineer | PHONE: +61 7 3270-4266  FAX: +61 7 3270-4245   |
| Stallion Technologies | Microsoft is not the Answer.                   |
\ Queensland, AUSTRALIA | Microsoft is the Question.  NO is the answer!  /

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