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.