In 1949, as a talented youngster, he got a big chance in Arne Skouens
first film: "Gategutter", playing Reidar. This promising start did not
lead into an acting career, except from two minor film parts in 1968
and 1969.
Knobelauch later became a well-known photographer, record producer, and
impresario for many Norwegian artists, he was also known as a very
resourceful person in Groruddalen, his local community in Oslo.