Question: how long does it take to import photos from iphone to imac?
Answer: It's always taken a while for my devices to complete the "Importing photos" step of the syncing process - maybe 2-5 minutes. Since the iOS 7 update, and iTunes 11.1, that process is taking up the 30 minutes! I have a very large iPhoto libray (260 gb and over 49,000 items) that is stored on an external Firewire drive.