Actually it's not what I've heard that sold me on the 5D Mark II, It was seeing the results with my own eyes. The full frame sensor is simply amazing and really lets you see the full range of the lenses that you use. The depth of field is fantastic, and there is no other camera with a sensor this size..Even the Red camera's sensor isn't this big. It really makes a difference in a side by side comparison, which I have done on several occasions.