James Cameron's Avatar opens next month and has been specially shot so that the 3D edition will be seen in a 1.78:1 aspect ratio which is commonly referred to as 16/9 and the 2D edition of the film will be shown in 2.35:1.
Avatar is set during the 22nd century on a small moon called Pandora that is inhabited by ten foot tall blue humanoids called the Navi who are peaceful unless attacked.
What follows is a battle between the human military and the Navi and the hybrids which get caught up in the war.
The film is set to be the most expensive ever produced in a 3D format and if it is successful then more cinema's will be converted to digital 3D.
Converting cinema's to 3D is relatively cheap thanks to new digital projection technology.