• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
ZEISS. Discover the fascinating world of birds, and win a birding trip to Columbia

Search results

  1. Manolito

    Canon MKIII convertors experiences please

    You shouldn't have any problem Mk II teleconverters. The MkIII have better communication between the lens (newer lenses) and the camera and AF speed (specially 2X). With a 500 Mk I you wouldn't see any noticeable difference between MK II and III teleconverters.