I have a question about image size. What is the largest size print I could get out of a 3216x2136 file? I have been using the largest size, 4288x2848 but when I lower it down to the meduim size(3216X2136) I almost double the amount of photos that fit on my card. I am primarily shooting ATV/Motocross racing and plan to sell the photos to the racers. Being a racer myself I would usually want a 4x6" or a 8x10", MAYBE a 12x18" topps. WOuld I be able to get a nice 12x18" with the 3216x2136?