A South Korean director, Park Chan-wook has shot and edited a 30-minute movie entirely on an iPhone 4. The movie is little different from others in video quality. But the advantage is it cost lower than those made with an ordinary film camera.

The result is "Night Fishing," about a man who encounters a female shaman during a fishing trip.

Filming alongside his brother, Park worked on a budget of around 130,000 thousand dollars -- using 10 iPhones shooting scenes simultaneously.

A device that's meant more for making phone calls and web browsing did present some constraints.

But Park said he turned those to his advantage to create something that is quite unlike any other movie.

Park said, "There are many limits. Those small cameras, of course, have such limits. However, instead of complaining it should be approached in a unique style that is intended for the movie. Then it can have better results than any other movies."

Park said, unlike his previous movies, his approach was less choreographed - the iPhone allowed a unique sense of flexibility.

He hopes the movie will inspire younger filmmakers to look at the popular gadget as an artistic tool.

"Night Fishing" is set to open in nine South Korean theatres in late-January.