Austin Mann took an iPhone 5 and 5s to Patagonia to compare the cameras:

All the fancy new features like fingerprint scan are nice and nifty but as a travel photographer, all I really care about is what this camera can do.     We climbed mountains, hiked to glaciers, slept in the wilderness… all the while documenting it with these two awesome little camera phones…

Several of the side-by-side comparison shots are amazing. Especially when comparing the dynamic range of the two cameras.

iPhone 5S Camera Review: Patagonia