Film theory was established to describe types of motion pictures and how they affect the mental and emotional feelings of the audience. Film theory takes into account that the making of films is a very distinct type of art. It covers discussion and thinking about films. As with many other theories, film theory was gradually created over a hundred-year period and has been influenced by many opinions and theories. These theories and opinions have been combined into a movement that with time, and one step at a time, has become a theory of the conceptual framework of the theater.