Walter Ruttmann

[2] Lichtspiel: Opus I, produced between 1919 and 1921, premiered on 27 April 1921 at the Berlin Marmorhaus, and released for German theatrical distribution in 1922, is the "oldest fully abstract motion picture known to survive, using only animated geometric forms, arranged and shown without reference to any representational imagery".

Ruttmann and his colleagues of the avant garde movement enriched the language of film as a medium with new formal techniques.

[3] In 1926 he worked with Julius Pinschewer on Der Aufsteig, an experimental film advertising the GeSoLei trade fair in Düsseldorf.

[citation needed] In 1926, Ruttmann licensed a Wax Slicing machine from Oskar Fischinger to create special effects for The Adventures of Prince Achmed, an animated fairy tale film, for Lotte Reiniger, making the moving backgrounds and magic scenes.

During the Nazi period he was replaced by Leni Riefenstahl as director of the documentary which eventually became Triumph of the Will (1935), supposedly because Ruttmann's editing style was considered too "Marxist" and Soviet influenced.

Lichtspiel Opus I (1921)
Lichtspiel Opus II (1922)
Lichtspiel Opus III (1924)
Lichtspiel Opus IV (1925)