Calculations to have equivalent-to-500mm F.O.V. in binoculars?

Started Feb 21, 2010 | Discussions thread
Ignacio A Rodriguez
Regular MemberPosts: 160
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Re: Calculations to have equivalent-to-500mm F.O.V. in binoculars?
In reply to Guidenet, Feb 23, 2010

And also same magnfication binoculars can have different FOV...you need to compare FOV.... For example: a 200mm lens in DX format will give you a 4.5 x 6.8 degrees and a 10x42 WB EL swarowsky binos will give you 6.3 degrees.
A little confusing because a 200mm lens is 4x the normal (1 x) 50 mm lens.

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