With intense use (I’ve made about 4,000 pictures in the last four days) I’ve discovered that the iPhone 5S is a very capable camera. The color and exposures are amazingly good, the HDR exposure feature does a stunningly good job in touch situations, the panorama feature is nothing short of amazing—seeing a panorama sweeping across the screen in real time is just intoxicating. Best of all it shoots square pictures natively, a real plus for me since I wanted to shoot for Instagram posting.
Once I figured out what the camera could do well I began to forget all the things it couldn’t do at all.
Jim Richardson on the iPhone 5s camera
from: http://www.macrumors.com/2013/10/07/national-geographic-photographer-praises-iphone-5s-camera/