• BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

    Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Search results

thxpress_search_the_forum Search Opus
  1. R

    First binoculars: Nikon Vs Celestron

    If I may,...I thought objective diameter in millimeters divided by the magnification gave you the exit pupil in mm. Did not know it directly related to FOV.
Top