16MM Film
16mm film was initially created in the 1920s as an inexpensive amateur alternative to the conventional 35mm film format. Thanks to the compact size and lower cost, 16mm was quickly adopted for use in professional news reporting, corporate and educational films, and other uses, while the home movie market switched to even less expensive 8mm film. 16mm was exten-sively used for television production in countries where tele-vision economics made the use of 35mm too expensive, as in the case of Britain.
SOURCES:
http://encyclopedia.thefreedictionary.com/16_mm_film