What effect does the write speed of your SD card have on the video quality? I've been making short films and have found that my video quality is poor compared to footage I see on Youtube. I compare apples-to-apples shooting in 1080 and compare to 1080 Youtube videos from other P3S users and my footage looks like garbage. No clarity at all. Is it because my SD card may be writing too slow? One of my cards is a speed class 4 and another is speed class 10. Will upgrading to a UHS speed class 3 improve my video quality?