How one of the best films at Sundance was shot using an iPhone 5S

Tangerine, a breakout hit from this year’s Sundance Film Festival, is full of surprises. There’s the subject matter: transgender prostitutes working in a not-so glamorous part of Hollywood. And there are the characters: flinty, funny, nobody’s victim. But the story behind the camera is as surprising as what’s in front of it. Particularly because the camera used to shoot Tangerine was the iPhone 5S.