Stages at Playa Vista:Much of the film was shot using Pace 3D cameras, as used on James Cameron's Avatar. Other sequences were converted to 3D in post-production.
Stages at Playa Vista:Production began on May 18, 2010 and wrapped on November 9, 2010, after many months of location work.
Stages at Playa Vista:Digital capture and effects work used Sony F35 and Arri Alexa cameras.
Sony Pictures Studios:The music score was recorded and mixed at Sony Pictures Studios.