How can I set up the camera (7D) so the DP can see through a monitor (or live view), another for the AC to pull focus, and the one more for the director?
run your HDMI signal to an HDFury, then HD Component to an-board monitor which you can loop to a Production monitor. see our setup here: http://barakepstein.blogspot.com/
We just got the new Swit 10" Monitor with SDI in, focus assit and Waveform Monitor, we send the HDMI to a Blackmagic HDMI to SDI Converter, the SDI to the Swit and then out to the client Ref via SDI which is a Sony 17" Job. Very nice, pricey, but very nice