Playing around with f8 autofocus on the 7D2. I also used manual exposure plus auto ISO. So I set f8 at 1/800 and the camera picked ISO 1600 for this shot due to the shade. It's not as sharp as my naked 500, but it is a hell of a lot easier to carry around!
7D2 400 5.6 + 1.4TC by
lennycarl08, on Flickr