Claim: Kammerspielfilm was derived from a theatrical form of the chamber play, the type that Max Reinhardt (September 9, 1873 – October 30, 1943) used to direct.
Evidence: The Kammerspielfilm was known as the "chamber drama" as a result of the influence from the theatrical form of the chamber play. The name derives from a theater, the , opened in 1906 by a major stage director Max Reinhardt to stage intimate dramas for small audiences.