I have a Sony DCR-VX2000 and I've been figuring out exactly what everything does on the camera. On the back of the camera there's a button that says AE and above the button it says Program. When I press the button and scroll through the options are AE A, AE S, a picture of someone golfing, a picture of a sunset and moon, and a picture of a candle. Because of the last 3 options I'm assuming it has something to do with the lighting of where you're shooting, but I don't really know what I'm changing. What exactly am I changing when I switch between these? What is the difference between AE A and AE S? I would appreciate as much info as you can provide. Thanks.