Resident Evil director Zach Cregger explains why the iPhone is vital to his work

There have been a number of high-profile movies technically shot on iPhone, but in most cases they are using the same professional cinematography kit they would use with other cameras, including lenses costing tens of thousands of dollars.

Resident Evil director Zach Cregger uses his own iPhone in a rather different way, taking an approach that could be useful to amateur and professional filmmakers alike …