See http://motion.kodak.com/motion/About/The_Storyboard/4294971312/index.htm.
Sample quote:
The filmmaking team also did quite a bit of testing, comparing different mediums. ... “In the end, for a variety of reasons, we chose 35mm film. What film has over digital is that it’s organic, it’s slightly softer, and there’s grain. There’s a certain sharpness to digital; you can treat it, but if you shoot on 35, what you see is what you get. You get an amazing image without a lot of post production.
“We shot well over a million feet of film ..."
