I am totally new to the forum so I am sorry if this is a repeat of previous posts. I am getting into cinematography and want to do action sports videos and would like to shoot in hd. It is my first camera and i have had a bunch of people say to go with a professional grade and other have said that a hd camera consumer camera. I have been looking at used hd cameras and i would like some imput on 1080p grade cameras. thanks