I don't think this is the point. Camera obscura didn't have any focusing at all and no AV mode and people still managed take pictures... We are talking about modern cameras and what they are supposed to do. 5D III obviously failed... I am shooting in...
I have the same problem since I bought my 5d mark iii about a year ago... I bought it for concert and music club photography and being a Nikon shooter I couldn't find appropriate camera in Nikon range at that moment and Canon looked reasonable... so ...
