Soviet motion-picture director whose kino-glaz (“film-eye”) theory—that the camera is an instrument, much like the human eye, that is best used to explore the actual happenings of real life—had an international impact on the development of documentaries and cinema realism during the 1920s. He attempted to create a unique language of the cinema, free from theatrical influence and artificial studio staging.

As a newsreel cameraman during the Russian Civil War, Vertov filmed events that were the basis for such factual films as Godovshchina revolyutsii (1919; The Anniversary of the October Revolution) and Boi pod Tsaritsynom (1920; Battle of Tsaritsyn). At age 22 he was the director of a government cinema department. The following year he formed the Kinoki (the Film-Eye Group), which subsequently issued a series of manifestos against theatricalism in films and in support of Vertov's film-eye theory. In 1922 the group, led by Vertov, initiated a weekly newsreel called Kino-pravda (“Film Truth”) that creatively integrated newly filmed factual material and older news footage.

The subject matter of Vertov's later feature films is life itself; form and technique are preeminent. Vertov experimented with slow motion, camera angles, enlarged close-ups, and crosscutting for comparisons; he attached the camera to locomotives, motorcycles, and other moving objects; and he held shots on the screen for varying lengths of time, a technique that contributes to the rhythmic flow of his films. Outstanding among Vertov's pictures are Shagay, Sovyet! (1925; Stride, Soviet! ), Shestaya chast mira (1926; A Sixth of the World), Odinnadtsatyi (1928; The Eleventh), Chelovek s kinoapparatom (1928; The Man with a Movie Camera), Simfoniya Donbassa (1930; Symphony of the Donbass), and Tri pesni o Lenine (1934; Three Songs of Lenin). Vertov later became a director in the Soviet Union's Central Documentary Film Studio. His work and his theories became basic to the rediscovery of cinéma vérité, or documentary realism, in the 1960s.