Con: It can mess up your hunt
Filming calls for extra gear, extra movement and potentially extra noise. Like anything else, you get better with time. So, there's a good chance you're going to blow a hunt or two, or not capture it on camera. There are two approaches you can take: 1) film the hunt by any means necessary, even if that means blowing it; 2) bring a camera and get what you get. If you miss the moment of truth, so be it.