• 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. opisska

    Advice on 500mm

    Hesitating AF is not typically a lens issue - the lens only moves as it's told - the body needs to decide where and when and if it's focused. The autofocus capability depends on the f/number of the lens for the same body, so with an f/4 lens it will autofocus worse than with some f/2.8 one for...