5D mark 3. Auto focus limits

[suresh gupta]

1. 5D mark 3. Auto focus works upto what aperture ? That is, with the 100 -400 lens, will it auto focus with 1.4x, and 2x extenders ?

2. In video mode, does it have continuos auto focus, and auto exposure ?

 

[neuroanatomist]

An f/5.6 or faster max aperture is needed, so no AF with 100-400mm + any Canon TC.

No continuous video AF.

 

[Tijn]

1. f/5.6
2. no and no, I think (not quite sure on that last one)