Shooting the actors against green screen, Burton says he avoided motion capture in favor of real flesh-and-blood performances filmed through special cameras. The human characters â€œneeded to kind of blend in with the Wonderland world," the animated director says. â€œIt was like their eyes, them, but in this sort of slightly mutated, or redefined, form." In the video above, free-associating director Burton explains his â€œwhatever works" approach to making the PG-rated movie, which opens Friday. â€œIt's been such a weird processâ€¦. We used so many different techniques that it really didn't manifest itself. Shots really didn't come in, in full, till the very endâ€¦. It was a constantly evolving thing."