I am a Mom who loves to take pics of my son playing his sports. I sit in the bleachers or on a hill and zoom in a little to take pics. I want a camera that I can zoom in and then come home and crop on the computer to bring the image in real close. I have a 7 meg. and 3x zoom. When I crop and zoom in close they are grainy. Do I need a higher zoom or higher megapixel? I used a 10.1 meg the other day with a little larger zoom. When I came home to crop them I pulled the pic in real close and it was still nice a clear. Thats what I want but is it because of the higher meg. or the higher zoom or both? I just like to have the camera do the work for me I dont need any special features.