Thank you both for answering these questions! It sounds like the P2 card is the best way to get the best image. How many minutes of 720p footage can a P2 card hold? I plan on making short films and docs with this so would I be fine with an 8GB or should I save up for a 64GB? Also the camera has 2 P2 card slots. Do I need 2 P2 cards in the camera all the time?