Photos Taken With iPhone 5S
apple.com
apple.com
[1]100% crop from the photo on the landing page http://i.imgur.com/2lbzB7G.jpg
The iPhone camera is definitely not holding anyone back from shooting pictures of "professional photographer" quality and I for one am glad to see so many people have access to something that allows for great photos to be taken without needing to know anything and everything about how cameras work.
The "interface to change the focus", AFAIK, is just an interface to change the reference point for the autofocus, so even if you "tap to set the focus" you are still relying on the autofocus.