I have never understood why anybody (outside of professionals in the biz) would care how a movie was shot or how much it cost. What matters is what’s up there onscreen, yes? Kudos to low-budget geniuses who work magic on a shoestring, but what does that have to do with how we watch the movie? So knowing that Sean Baker shot Tangerine entirely with iPhones may be worth a chummy “Cool story, bro,” but it’s not exactly news that anybody with a device can make a movie. More important is that Tangerine bristles with zany energy and unexpected humor, and that Baker has a fine eye for dynamic, on-the-fly angles in fast-food joints and inner-city streets.