Together with Odo Deodatus Tauern, Bernhard Villinger and Rolf Bauer, Fanck established the company Berg- und Sportfilm GmbH Freiburg in Freiburg im Breisgau in 1920. Fanck, who held a PhD in geology, directed mountain films, sports films and ski films. He was assisted by Sepp Allgeier, a cameraman who later worked with Leni Riefenstahl, and worked mostly in the Alps in locations such as the Engadine, Zermatt and the Arlberg and on mountains such as Mont Blanc and Piz Palü.