When using films as evidence in your essay, students have a tendency to focus in on the dialogue. While movie dialogue plays an important part in establishing a filmmaker's interpretation, it is important to consider the visual evidence as well and to do so using the proper cinematic terms. While one should always be careful using wikipedia sources, this one does provide some good definition of film and cinematic techniques that might help you properly describe the way in which a scene was filmed. http://en.wikipedia.org/wiki/Cinematic_techniques