Chris Parks About 3D and VFX in Gravity
Chris Parks was the 'Gravity' Stereoscopy Supervisor at Vision3 Studios in London. He explains here under what Vision3 did for the sci-fi movie that recouped its $100M production budget in 5 days:
There were three main techniques used on Gravity. About 80 shots, 25 minutes, were primarily post conversion - done by Prime Focus London. These were the shots in the two capsules and the final shot of the film. We also added stereo elements - principally objects like helmets floating in weightlessness. Prime took the geometry of the escape pods from the scene which gave us a pretty accurate foundation, within which to put the characters.
I also shot stereo reference plates of a moving model with different focal length lenses and different distances to demonstrate the sort of feel that I wanted to help me communicate with the artists - it can be surprising how far back on the side of the head the ears really are!
Sandra Bullock and George Clooney in Gravity, copyright 2013 Warner Bros Pictures