Film theory explores two main approaches: formalism and realism. Formalism focuses on artistic and technical aspects, emphasizing how films are constructed. Realism aims to depict the world authentically, capturing truth in subject matter. These contrasting approaches shape filmmaking techniques and storytelling. Formalism uses stylized elements and editing to create meaning, while realism favors naturalistic methods to preserve authenticity. Understanding both helps filmmakers craft compelling narratives and visuals.