Cameron's "Avatar," a science-fiction adventure set 150 years in the future, will start production this spring, with a scheduled summer 2009 release by 20th Century Fox. For now, Cameron's other contemplated feature, "Battle Angel," is on hold.
After flip-flopping between "Avatar" and "Battle Angel," Cameron said he decided to proceed with the former film after completing a five-day camera test a year ago. "I could vividly picture how we would shoot the film," the writer-director said.
The movie, which combines live action and animation, will be made with some of the same performance-capture animation techniques used in movies such as "Monster House" and "The Polar Express." Cameron says his process will offer numerous refinements, especially in its depiction of facial expressions and physical action. The movie will be filmed with digital cameras and shown in 3-D theaters.
"The fundamental difference between the way we're doing [performance capture] and the way it's been done is that it's really director-centric now," Cameron said. Rather than wait for months of post-production to see how a final shot turns out, Cameron will be able to see in nearly real time how an actor and the environment combine.
Since he made 1997's "Titanic," the highest-grossing movie in Hollywood history and the winner of the best picture Oscar, Cameron has made several documentaries. In both "Ghosts of the Abyss" and "Aliens of the Deep," Cameron experimented with 3-D camera systems, new versions of which will be employed on "Avatar."
Cameron said 95% of the film unfolds on Pandora, a moon of a giant gas planet. Pandora features a lush tropical forest rich in striking plant and animal species, and its inhabitants have been targeted for exploitation.
While much of the acting will be recorded in 31 days of performance-capture photography on a high-tech Playa Vista stage, "Avatar" also will feature live action, which will be cut together with the animation. "Ideally, the audience won't know where one ends and the next starts," Cameron said.
When Cameron made "Titanic," he cast at its center two actors without much name recognition at the time: - Leonardo DiCaprio and Kate Winslet. Both, of course, went on to be huge stars. For "Avatar," Cameron has cast two more under-the-radar performers: 30-year-old Aussie actor Sam Worthington ("The Great Raid," "Hart's War") will play the film's hero, Jake, and 28-year-old Zoe Saldana ("Pirates of the Caribbean: The Curse of the Black Pearl," "Drumline") his love interest.