I've been playing with the camera in my new iPhone 4. It is pretty impressive - 5 megapixel, with zoom and manual spot focusing capabilities. I checked the native size on an uncropped image and it should be sharp to about 28x36 inches. The colors, white balance and low light handling are way better than in the iPhone 3G.This image of Clara I snapped in low light. Pretty impressive for a pinhole of a lens!