My camera has two 7 MP modes: Fine and Normal. Fine is around 3 mbs while normal is around 1.5 mbs. They look exactly the same. I set up my tripod and took two identical pictures and I can't tell the difference between them even when I'm looking for differences. One looks a tad lighter and MAYBE the grain is a little different but I wouldn't pick one over the other. I'm going to start using Normal for now on to save space on my card (why use twice as much space when you can't tell the difference?). Is it possible there will be situations where Fine and Normal will be strikingly different in quality? What exactly is the difference between these "qualities"?