Although there are many hallucinating plot scenes in the film, as Nolan's signature style, he is still used to let the entire creative team try to build it on the spot, and avoid excessive use of CGI technology. "I always think that the most important thing is to do the homework that should be done in front of the camera lens and put in real effort. Then, if necessary, computer imaging will make it easier to improve the effect of real-time shooting and play an icing on the cake.
Nolan insisted on using the camera to complete the shooting. The computer is basically worthless with him. This method of operation is simply unbelievable in Hollywood. This is achieved thanks to the help of Varley Fist and Chris Cobbard. One of them is Nolan’s queen photographer and the other is the special effects director of Bond Films. Together, the two helped Nolan achieve this. The return of old-fashioned film techniques. The filming footprint of the film is all over the world, and the shooting of the main scenes alone involves six countries on four continents. During the filming process, the cast and crew of the film crew can be said to have gone through hardships, experienced the scorching heat of Tangier, Morocco, and experienced the heavy snow in Calgary, Canada. The filming locations also included Tokyo, Paris and Los Angeles. In order to make a set of vehicle action shots, the visual effects team used artificial rainfall and other means to complete the plot of a freight train sweeping the city center.
