The third shot in the trailer, of the heroine doing household chores, is a good example of the kind of camera movement I'm referring to. Obviously that's not to say that every shot is distracting, but shots of this kind, in which the camerawork seems to break away from the plot, recur frequently throughout the film (the lateral tracking shot of the line of people walking in the countryside is another). On the other hand, the camera movement in Welles' film always has a narrative motivation.