Hi. My first time here. We have owned a Powershot A720 IS for many years and it has always taken great pictures and movies. Recently the movie quality has severely degraded. I'm not sure if I would describe the movies as "grainy" but rather as if they had been shot through a window bug screen. I can find nothing in the manual that refers to this and all settings are for maximum picture quality. Is something "cooked" in the camera or have I somehow messed up a setting? Any help would be appreciated. Thanks, Andy