Except for tracking a moving subject as in shooting runway or sports action, there's no AF system yet made that can really focus quicker and more accurately than I can. With Canon's eye-control it's a little bit better, but it's also a pain in it's own way. Focusing isn't that difficult anyway, and takes up almost zero of my conscious attention, just keep a hand on the lens barrel (where it should be anyway) and turn it... As it is, in AF mode often end up manually correcting focus anyway.
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