I just wanted to add this picture to show how P mode saved me last night
I was at my friends bachelor party and we were inside Dave & Buster's so the lighting conditions were pretty unknown for me
Also your not allowed to take pics in there and I had several cocktails, so I had to be quick.
The flash comp was set to -1 in Av mode, so I'm not 100% sure if that carried over to P mode. But I just let the camera do it's thing on full auto and it came out with this.
I think thats pretty good exposure wise considering the conditions and the lens I was using. If I had the 580ex or something with a diffuser I bet it would look a lot better, but for a stock rebel on auto I was happy
Some PS work and this will look really good IMO.
Best,
Jay