SUNY Purchase graduate of visual arts. New York based DP and 1st AC working with any DSLR, Black Magic, Sony FS7, and ARRI Alexa.
Pickup the Switronix powerbase with the adapter for the a7s as well as an additional switronix powerbase battery unit. Then get yourself an Odyssey 7Q+. The battery will power the camera and monitor for 4-5 hours. I also recommend sending the UHD signal via hdmi to the odyssey and having it down convert to 1080. This will maximize the potential of your a7s. This is my current camera setup.
What did the two Gaffers do?