And for what it's worth, I'm happy in principle that Canon are offering this upgrade.
I'm not happy that a serious video camera like the C100 has AF at all. Leave the trinkets for the muppets.
AF has no place on a serious video camera.
Some photographers used to say the exact same thing when AF was first introduced to stills cameras....
... Thank-god the innovators ignored them!
Yes, thank god. AF is great on my stills cameras.
May I draw your attention to the distinction I made, and that was 'serious' video cameras.
Stills AF works really well because you only show one single frame. Video is contiguous. Every frame has to be in focus, or the sequence is binned. Add in moving subject to camera distance etc and AF, particularly AF hunting is just a killer.
AF is great, really is, for stills, for hobby video, family video, super.
I'm making a clear distinction here. I'm not talking about those guys. Those aren't the guys the C100 etc should be trying to please. Those guys don't manually WB. Those guys don't understand why you always need ND filters in your kit bag for video. Those guys don't understand f-drop.
I know how well car analogies go down here, so it's like putting an autobox in a, hmmm, jaguar xk120. Except that cameras aren't british racing green, and you cant change the tyre on a c100.