From what I've read, the 7D and 1D were both used on the subway scenes, but I didn't see any reason given for choosing one over another on a particular shot. Good to see people shooting on them without all the usual paraphernalia… the 7D and Canon 24mm 1.4 L would set you back less than even some non-Zacuto rigs.Because they were stealing shots* on the NYC subway and they needed to be as low profile as possible. There's supposedly some 1dm4s stuff in there as well, but I didn't see any specific reference to scenes. I'm pretty certain the AC article talks about the 7D. There's a picture of him shooting Natalie's reflection in the article.
Do let us know what you decide on! Have been meaning to subscribe to the AC for a while, but the print version costs a small fortune over here, and I'm not sure I'll be as interested in reading the digital one - I tried their sample issue and the e-reader software was a pain in the arse to use.I don't think the AC article mentions that as part of it, but the ICG magazine article (went out and snagged both, trying to decide which one to subscribe to, probably AC as it has more on lighting than ICG does, although as a magazine ICG is more nicely presented and printed) - i think mentions that point.