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:
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 . Park says the iPhone 's small size and light weight made it a good tool .