look made them seem unfamiliar. Cuarón informed the art department that the film was the "anti-Blade Runner", rejecting technologically advanced proposals and downplaying the science fiction elements of the 2027 setting. The director focused on images reflecting the contemporary period. Single-shot sequences Children of Men used several lengthy single-shot sequences in which extremely complex actions take place. The longest of these are a shot in which Kee gives birth (3m19s); an ambush on a country road (4m07s); and a scene in which Theo is captured by the Fishes, escapes, and runs down a street and through a building in the middle of a raging battle (6m18s). These sequences were extremely difficult to film, although the effect of continuity is sometimes an illusion, aided by computer-generated imagery (CGI) effects. Cuarón had experimented with long takes in Great Expectations, Y tu mamá también, and Harry Potter and the Prisoner of Azkaban. His style is influenced by the Swiss film Jonah Who Will Be 25 in the Year 2000, one of his favourites. He said "I was studying cinema when I first saw [Jonah], and interested in the French New Wave. Jonah was so unflashy compared with those films. The camera keeps a certain distance and there are relatively few close-ups. It's elegant and flowing, constantly tracking, but very slowly and not calling attention to itself." The creation of the single-shot sequences was a challenging, time-consuming process that sparked concerns from the studio. It took fourteen days to prepare for the single shot in which Clive Owen's character searches a building under attack, and five hours for every time they wanted to reshoot it. In the middle of one shot, blood splattered onto the lens, and cinematographer Emmanuel Lubezki convinced the director to leave it in. According to Owen, "Right in the thick of it are me and the camera operator because we're doing this very complicated, very specific dance which, when we come to shoot, we have to make feel completely random." Cuarón's initial idea for maintaining continuity during the roadside ambush scene was dismissed by production experts as an "impossible shot to do". Fresh from the visual effects-laden Harry Potter and the Prisoner of Azkaban, Cuarón suggested using computer-generated imagery to film the scene. Lubezki refused to allow it, reminding the director that they had intended to make a film akin to a "raw documentary". Instead, a special camera rig invented