A photo comparison from all iPhone version cameras (first
generation iPhone, iPhone 3G, iPhone 3GS, iPhone 4, the new iPhone
4S), a point-and-shoot camera, the Canon S95 ($500), and a
professional dSLR, the Canon 5DMKII ($4000+) in two situations: 1.
A macro setting to test detail and quality of the cameras; 2. A
backlit skyline shot.
Not bad for four years of progress.