The most innovative technical aspect of Citizen Kane is the extended use of deep focus technique which is considered to be the most significant contribution to cinematography. This technique allowed him to photograph backgrounds with as mush clarity as foregrounds, as opposed to having only the people and things in the foreground in focus. Such a technique is noticed in the scene where Kane 's parents are filmed discussing his future while he 's seen through the window in the foreground playing outside in the snow. Deep focus makes possible for the film maker to showcase overlapping simultaneous actions, where the mise-en-scène becomes more significant since the physical environment in which the film takes place should be then taken into account. Besides, is it important to note that the cast members that Welles 's had chosen for his film had never made a movie before and were all classically trained theatrical actors. Their theatrical background played an important role and had an impact on the success of techniques like deep focus, since actors were placing themselves firmly in each scene.
Moreover, another unorthodox method used in the film was the low-angle shot. This technique tends to