From here, our D3200 took around two seconds to send over a live view of what its lens was seeing, but annoyingly, you only get what amounts to a thumbnail view of the proposed shot.

ENGADGET: Nikon WU-1a wireless mobile adapter for D3200 review: using Android as a remote trigger / wireless display

IPhoto will find look-alike photos when you double tap on an image in the thumbnail grid view.

WSJ: The Digital Solution: Letting Your Fingers Do the Photo Editing