1936: The first 35 mm SLR with bayonet mounted interchangeable lenses, the Kine Exakta.
In 1992, he created 35 mm projected backgrounds from small-format film and video elements, for Peter Sellers's production of Paul Hindemith's Opera Mathis der Maler, at London's Royal Opera House, Covent Garden.
The Tessina (officially created by Arnold Siegrist) is a high-quality 35 mm camera patented by Austrian chemical engineer Dr. Rudolph Steineck in Lugano Switzerland, manufactured by Siegrist in Grenchen Switzerland.
The ease of copying also suggested its use in the distribution of movies, and in 1961 Kalvar and Metro-Goldwyn-Mayer formed a joint venture, "Metro Kalvar", to market a system for copying 16 mm and 35 mm black-and-white motion pictures.