I just saw the movie recently and it is quite beautiful. It was shot on 35mm with a Aaton 35-3 and a Arriflex 435 ES. How they got that look? Great lighting. Thank the DP's Alwin H. Kuchler & Marcel Zyskind. They seemed to use a lot of natural light but I haven't really looked into it.
Man, I watched the making of. The crew was only about 15 people! Lots of scenes with natural light, but an incredible result, with soft blacks and colors. Resembles Ellen Kuras "Eternal Sunshine of the Spotless Mind". I do agree with you, that was achieved with great lighting, but also with some color correction, which is what I´m trying to understand.
I agree that CODE 46 is a stellar looking film.... Here's a slightly unrelated question from a newbie: is there a website (other than IMDB) that lists the formats movies where shot in? I know I could just fast forward to the credits of a film to figure this out, but does anyone know a site with that kind of information? THX