Zoe Saldaña said in an interview with Beyond Noise that James Cameron is “considering a documentary about the making” of the “ Avatar ” movies, which the Oscar-winning actor is keen on because it will “finally give us a chance to explain, in a meticulous way, why performance capture is the most empowering form of acting.” “It gives us the credit, the ability to own 100 percent of our performance on screen,” said Saldaña, who has long been a champion of motion capture acting and has been