Is There Anything Better Than '35mm equivalent'?

Started Mar 6, 2011 | Discussions thread
Chas Tennis
Contributing MemberPosts: 634
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Re: Is There Anything Better Than '35mm equivalent'? -Radian System
In reply to MisterBG, Mar 8, 2011

Radian System-

To convert degrees to radians divide by 57.2 degrees.

For example, for the 6 degree angluar FOV' in your telephoto example.

6 d. 57.2 D. per radian = about 0.1 radian

What is the linear FOV at 100 meters:

FOV radians X 100 = 10 meters

Chas Tennis

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