Fritz Arno Wagner (5 December 1889 – 18 August 1958) is considered one of the most acclaimed German cinematographers from the 1920s to the 1950s. He played a key role in the Expressionist film movement during the Weimar period and is perhaps best known for excelling "in the portrayal of horror" according to noted film critic Lotte H. Eisner.
Born in Schmiedefeld am Rennsteig, Germany, Wagner received his training at the Académie des Beaux-Arts in Paris. In 1910, while still attending the University of Leipzig, he managed to secure a job as a clerk at the Pathé film company. In 1912, he became both secretary and chef at the Pathé offices in Vienna and later in Berlin.
Interested in cinematography he became a newsreel cameraman in 1913 and was stationed in New York for Pathé Weekly where he reported on the Mexican Revolution. At the outbreak of World War I in 1914, he returned to Germany to enlist in his country's elite Hussar cavalry whilst still filming war reports. However, after being wounded, he decided to take the job of stills photographer and then 2nd cameraman at Projektions-AG Union PAGU. In 1919, he went to work as a primary cameraman for Decla-Bioscop.
Along with Karl Freund, Wagner became Germany's leading cinematographer of the 1920s and 1930s, a master of the dark, moody lighting that characterized the expressionist movement. He worked with some of Germany most prominent directors, including Ernst Lubitsch on Madame Du Barry (1919), F. W. Murnau on The Haunted Castle (1921), The Burning Soil (1922) and his classic Nosferatu (1922), and G.W. Pabst on four features, The Love of Jeanne Ney (1927), Westfront 1918 (1930), Comradeship (1931) and The Threepenny Opera (1931) based on the Bertolt Brecht and Kurt Weill musical. He also collaborated with Fritz Lang on four films, Destiny (1921), Spies (1928), M (1931) and The Testament of Dr. Mabuse (1932).