Excerpt: I bought my canon EOS 80D and the Canon EF 1.4 X despite the warnings that the auto focus may not work with lenses 5.6mm. I planned to use the extender with the CANON EF 3.5-5.6 L 100-400 Zoom lense for bird photography with all automatic settings.
Excerpt: This single piece of equipment has changed the way our journalism team is able to shoot action sports photos. It's compact size makes traveling with an additional lens easy, and it's very easy to put on the camera when needed. Great addition to our photo equipment.
Excerpt: Got this to use with my new 100-400L MKII lens, works great, with some really nice sharp pictures. Not for fast moving objects, but works great for slower targets or a non-moving object. I'm very happy with this unit.