It's a 9.1 megapixel camera. Under image size, should I always leave it on 9m or should I use 3:2 which is 8m. I would think I should leave it on 9m but wanted to see what you all thought. Also, when I use aperture priority mode to blur the background, I have a hard time getting it to work. My camera will only go to f8. Sorry for the noob question but I'm trying to fully understand my camera so I can get the best picture possible. Thanks!