**[[Apple engineers on computational video in cinematic mode]] **

Cintematic mode allows iphon users to use sophisticated depth of field and focus pulling techniques in their story. It's more than just being able to segment out the depth, it's also about bringing in cinemotography techniques. And so our new cinematic aarithms actually, in real time, choose the most likely subject to be in focus - then automatically move or rack that focus as the subjects in the scene change.