I'm a graphic designer and I'm shooting some of my print pieces for my portfolio. I'm using a Casio EX-510 which I've had fantastic results with, but apparently not today! I'm shooting using Auto mode, no flash, on a tripod, with tons of natural light coming in from multiple windows. But even with all the great light in the room, my exposures come out grainy and rezzy, with lots of what I call "digital noise." Check out this detail at 100%: Any suggestions on how to correct this? Any feedback greatly appreciated!