Will the iPhone 3GS Kill the Cheap Pocket Camera?

Gadget Lab | Wired.com:

That focus control is one of the reasons the camera has improved so much. Autofocus lenses don’t have to be sharp front to back. This means that there is less of a compromise between flexibility and quality, and the lens can be designed to be sharper. And any focusing, auto or manual, means that you can achieve a shallower depth of field for differential focus and blurred backgrounds. That the iPhone also has touch-to-focus control is just gravy.