• 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. O

    Settings for Sigma Lens

    I've been working with a new Sigma 150-600mm C lens on my Canon 7D mk ii for the last month and would suggest using the back button feature on the camera while turning the autofocus off on the shutter release button. That allows you to control when the camera tries to change the focus by...