1. Christopher Nolan hopes that the film can provide the audience with an immersive experience and show the audience the cruelty and horror of war, so the whole film is shot with IMAX cameras.
The three-quarters of the film’s images are all presented in IMAX full-frame format. However, because the IMAX camera is very heavy and the shooting process is very difficult, the director of photography Hoyt van Holtma often carries a camera weighing dozens of kilograms. Shooting at sea. The film crew thought of various ways to shoot water and war scenes. When filming the air combat, the film crew found several Spitfire fighters and let the actors sit on them to act. In order to give the audience an immersive feeling, director Christopher Nolan put himself in the fighter plane with the IMAX camera, and also built a special pipeline to place the IMAX camera in the cockpit.
2. This film is the first time Christopher Nolan directed a film on the theme of World War II.
3. The film is divided into the infantry part on the beach, the navy part and the air force part, and strives to present and construct this historical event from different personal perspectives.
4. There are not many lines in the film, and the lead actor Tom Hardy has only a dozen lines.
5. Christopher Nolan has spent a lot of time studying the scheduling of silent films for group performances, how the space is used and how to capture them in time with the camera.
6. On the busiest day of the production of the film, the filming team arranged as many as 62 ships at sea for simultaneous filming.
7. In order to restore the real sense of war to the greatest extent, the film uses real ships and airplanes at the time, and asks history expert Dan Fredkin about the different characteristics and flight methods of various airplanes.
8. Warner Company offered Nolan a contract with a basic salary of 20 million US dollars + 20% of the box office share. This contract is the same as the contract that Universal gave to Peter Jackson in the filming of "King Kong", and it is also the largest contract for a Hollywood director.
9. The music of the film is inspired by mathematical principles. Christopher Nolan sent Hans Zimmer a recording of the continuous tapping of a watch, and created the soundtrack for the film based on this.
10. When interviewing 20-year-old Phine Whitehead, Christopher Nolan ate and talked about scripts. This was the first time in his career that he felt that he had a sense of responsibility to young people.
11. Christopher Nolan has spent a lot of time studying group performances, including the movement of extras, the presentation of space, the capture of the camera, and the use of shooting perspectives.
12. In order to get the best results for the film, actors are prohibited from using mobile phones during the filming process.
13. Christopher Nolan studied a lot of historical data before filming and found that the British soldiers waiting to retreat in Dunkirk were very young and inexperienced. In order to truly restore history, Nolan finally made a decision to let young actors play soldiers. decision.
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