Magnification

A: This depends on which scope and eyepiece is being used.

Magnification is determined by the focal length of the spotting scope's objective lens and the focal length of the eyepiece (in combination).


Please note the formula for determining magnification of a spotting scope or telescope:


Focal length of the scope’s objective lens divided by focal length of the eyepiece equals magnification.

For Example: 390mm (scope’s focal length) / 10mm (eyepiece focal length) = 39X magnification.


This simple formula helps the user determine which eyepieces provide the most effective magnifications with their scope.