This document provides an overview of several film theories, including early film theory, realism film theory, auteur theory, and feminist film theory. Early film theorists like Hugo Munsterberg and Rudolf Arnheim viewed films as a unique art form that transforms normal visual perception through techniques like editing and camera angles. Realism film theory holds that films encode reality in subjective ways and viewers judge films based on their own life experiences. Auteur theory posits that some directors impose their personal vision and style to achieve an auteur status. Feminist film theory critiques the stereotypical passive representations of women in classic Hollywood films and calls for more positive portrayals.