• 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

  1. Troubador

    First binoculars: Nikon Vs Celestron

    Taken from Celestron Knowledge Base: https://www.celestron.com/blogs/knowledgebase/what-is-exit-pupil-and-eye-relief-for-sport-optics "Exit pupil size is calculated by dividing the objective lens size by the magnification power. For example: You want to know the exit pupil of an 8x42...
  2. Troubador

    First binoculars: Nikon Vs Celestron

    Gentlemen Personal comments have no place on Birdforum. Kindly calm down and treat each other with respect. Lee Moderator
Top