Can somebody explain cameras to me? Why is that picture all blurry? Is it the ISO? (I set it at 400. I figure that's the best, like 400 speed film. What the hell does it mean?) Is it the "noise reduction?" This camera cost me $500 and I can't get a crisp, smooth picture to save my life. Everything's slightly blurry and very noisy. SOMEBODY 'SPLAIN!