South Korean filmmaker Park Chan-wook says new film was shot on the iPhone 4 . Fantasy-horror film `` Paranmanjang '' is about a half-hour long . His brother , Park Chan-kyong -- also a director who collaborated on the film -- says a wide variety of camera angles and edits were possible because a number of cameras could be used . Comment:
South Korean filmmaker Park Chan-wook says new film was shot on the iPhone 4 . Fantasy-horror film `` Paranmanjang '' is about a half-hour long . Comment: