Hong Kong director Christopher Sun arranges toy action models in front of a massive penis-shaped fountain, the easiest way to explain his intentions to the multilingual cast of what has been billed as the world's first 3D porn film.



"I can't ask my crew to do this and the best thing is you can get (the action models) naked without any complaints," he told AFP at a secluded studio in Hong Kong.

The director is in a race against time to complete his 3.2 million-US-dollar film "3-D Sex and Zen: Extreme Ecstasy", which is due for release in May.