I've had some issues finding a camera that will work. I'm using a blackmagic intensity shuttle capture device to get and HDMI feed into a mac, then broadcast. I tried using a Canon HF R52, but the output is locked to 60 hertz (60FPS), and the shuttle is only capable of 30 or less. Any suggestions? It's tough, as HDMI output typically isn't listed, as far as i can see. Thanks!