Width of Field and Magnification
How does the width of the field vision compare to the
amount of magnification?
If you set the diameter of the lenses to a constant, then field of
view decreases with increasing magnification. This is one reason
very strong binoculars have such big lenses.
R. W. "Bob" Avakian
B.S. Earth Sciences; M.S. Geophysics
Oklahoma State Univ. Inst. of Technology
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Update: June 2012