Agree 100%. The AF on the 7D was awful with it for some lenses and, for example, would not reliably AF with my 300mm f/2.8 II + 2xTCIII, as others found to their cost. But, that was cured with the 7DII and I found the 5DS R even better. The 7DII only has the centre AF for f/8, and only the centre point is a high precision one. Canon has the technology for upgrading the 7DII, and it is frustrating it doesn't do so.I found it to be pretty flaky with the 7D. But then again, I found the entire AF system of my 7D to be pretty flaky. The shot-to-shot variation was ridiculous. What good does it do to make such a highly configurable AF system if it can't decide whether to front-focus or back-focus from one frame to the next!
It works much better for me with the 7D Mark II and the 5D Mark III than it did with the 7D.
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