• 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. J

    Please school me on the Pentax 65

    Hi, quite frankly, if you have a scope that is doing 20x well (which is not very difficult) and you only want/need 20x, there is not really a need to upgrade. Regarding the EP question for the Pentax with a body focal length of 390mm we get 390mm / 20 = 19.5mm or 390mm / 25 = 15.6mm. My...