photography for Avatar began in in Los Angeles and Wellington. Cameron described the film as a hybrid with a full live-action shoot in combination with computer-generated characters and live environments. "Ideally at the end of the day the audience has no idea which they're looking at," Cameron said. The director indicated that he had already worked four months on nonprincipal scenes for the film. The live action was shot with a modified version of the proprietary digital 3-D Fusion Camera System, developed by Cameron and Vince Pace. In , Fox had announced that 3-D filming for Avatar would be done at 24 frames per second despite Cameron's strong opinion that a 3-D film requires higher frame rate to make strobing less noticeable. According to Cameron, the film is composed of 60% computer-generated elements and 40% live action, as well as traditional miniatures. Motion-capture photography lasted 31 days at the Hughes Aircraft stage in Playa Vista in Los Angeles. Live action photography began in at Stone Street Studios in Wellington and was scheduled to last 31 days. More than a thousand people worked on the production. In preparation of the filming sequences, all of the actors underwent professional training specific to their characters such as archery, horseback riding, firearm use, and hand-to-hand combat. They received language and dialect training in the Na'vi language created for the film. Before shooting the film, Cameron also sent the cast to the Hawaiian tropical rainforests to get a feel for a rainforest setting before shooting on the soundstage. During filming, Cameron made use of his virtual camera system, a new way of directing motion-capture filmmaking. The system shows the actors' virtual counterparts in their digital surroundings in real time, allowing the director to adjust and direct scenes just as if shooting live action. According to Cameron, "It's like a big, powerful game engine. If I want to fly through space, or change my perspective, I can. I can turn the whole scene into a living miniature and go through it on a 50 to 1 scale." Using conventional techniques, the complete virtual world cannot be seen until the motion-capture of the actors is complete. Cameron said this process does not diminish the value or importance of acting. On the contrary, because there is no need for repeated camera and lighting setups, costume fittings and make-up touch-ups, scenes do not need to be interrupted repeatedly. Cameron