In Michelangelo Antonioni’s 1966 film, ‘Blow Up’, the director would have had to consider many key works prior to shooting that scene, such as coordinate the extensive movement and blocking of the actors within the set in conjunction with the camera movement, focus and framing as well as considering what it suggests to the audience. The director also have to work with the cameraman long before the shoot and have full understanding about the shot in order to shoot this complicated scene, to make sure the camera position , angle ,lights and movement are perfectly setup and done.
The actors would have to study their lines , and understand their movement, follow the marks and must have rehearsed a number of times to accomplish such movement and acts in that space.
Overall, as a cameraman , I admire and respect the camera operator in Blow Up, because of his framing and movement, amazing work and understanding and chemistry with the director.