Alfonso Cuaron smiled when I suggested that "Gravity" was pure cinema in the tradition of Hitchcock: the long, exploratory shots of Sandra Bullock floating in space with alternating points of view, tethered to a mise en scene of perpetual motion that's very musical: balancing primal terror with celestial beauty. The opening 13-minute shot alone will be studied for its visual and dramatic force.
While it took some new techniques to pull off such a realistic-looking adventure in zero gravity space (including the construction of the LED Light Box, cameras mounted on computer-controlled robot arms, and custom-designed wire rigs for rotating and tilting the actors like marionettes), the cinematic language fundamentally remains the same.
"I was thinking about pure cinema and that it transcends narrative," Cuaron remarked. "An abstract language of being immersed in almost like a dreamscape. But the problem with visual effects is what looks amazing one day, two years later looks dated. And that was my only fear with 'Gravity.' I hope not."
I don't think Cuaron has to worry about "Gravity" looking dated. It's the "2001" of the 21st century and the obvious front runner for the VFX Oscar: breathtakingly photoreal and just as organic. And the great thing about photorealism is that it totally strips away the artifice, allowing greater immersion.
"I'm not a tech person," Cuaron admitted. "But we developed technology for 'Children of Men' and 'Gravity' to achieve the shots that I wanted. It's similar to Murnau, who would develop systems to achieve his shots. He invented cranes to go from here to here to here."
But to achieve such elastic visual poetry required a new kind of reverse engineering from Framestore in London, under the VFX supervision of Tim Webber. Remarkably, everything in "Gravity" was animated ahead of time and then the actual faces of Bullock and George Clooney were placed into the virtual environments. Even their suits and helmets were CG. The only practical sets were the interiors of the two capsules and parts of the ISS space station.
This meant that the entire movie was first prevised (the team was based out of Framestore in collaboration with The Third Floor) to work out the lighting as well as the compositions and camera moves. The previs was so good, in fact, that the daughter of cinematographer Emmanuel ("Chivo") Lubezki (interview here) thought it was the real movie.
Cuaron said the process was "like eating an elephant one spoonful a day." Normally, the director and Lubezki do all of their prep and then throw it all away when they arrive on set in order to discover happy accidents. On "Gravity," with all of the pre-programming, they had to break it apart and manufacture those happy accidents. (Cuaron also spoke to TOH! out of Toronto: Q&A here.)