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Film Theorist: Sergei Eisenstein, renowned for his groundbreaking contributions to the world of cinema, was not only a prominent director but also a highly influential film theorist. His writings, such as "Film Form" and "The Film Sense," revolutionized the way filmmakers and theorists understood montage, editing, and the overall language of cinema. Eisenstein's theoretical explorations continue to shape the study and practice of filmmaking to this day.