Conran created the movie’s story and backgrounds in a computer, then went out and shot real actors (Gwyneth Paltrow, Jude Law and Angelina Jolie) against blue screens. The actors were then digitally composited into the film’s environments, which were enhanced in post-production.
Oddly enough, about a year or so ago, the PCs in the Eternal City went through a shadow stay where the Media Giants did movies exactly this way.
Films were done with actors doing closeups and “money shots” and then everything else was done in a computer.
Hollywood is already half way there on some films.