I recently made the transition from Canon to Sony. There were many aspects of the Sony A7R2 that I loved but there were two primary issues with it that were preventing me from dropping my Canon gear completely. The first was the lack of the joystick for moving the autofocus points around. The second was autofocus issues in a studio/strobe environment. The a9 has addressed both of these problems and allowed my to finally trade in my Canon gear. I have to say the a9 has been a joy to shoot with. The files are amazing and the AF is fast and accurate. I am not typically a sport shooter but I have been working on a personal project on rodeos and decided to give the a9 and 20fps capture a run through. Here is a clip shot at 20fps played back at a lower frame rate. The camera tracked this action amazingly well.