andrew keeler
Autofocus is Awful.
Completely honest review here. If you are a video shooter do not buy this lens. It's autofocus is horrible, unreliable at best and just broken most of the time. I updated the firmware on the lens and for photography it's a bit better but it loves to hunt even when it's locked on. It will say it's locked on when it's most definitely not. Just useless unless your MF. And even than you should buy a cinema lens as the price is about the same and the image quality is better.