8 mm film is a motion picture film format in which the film strip is eight millimetres wide. It exists in two main versions – the original standard 8 mm film, also known as regular 8 mm, and Super 8.
"Super 8" 8 mm films
Ciné-Kodak Kodachrome 8mm movie film (expired: May 1946)
Revere Model 144 8 mm film camera from 1955 at Universum museum in Mexico City
Standard and Super 8 mm film comparison
16 mm film is a historically popular and economical gauge of film. 16 mm refers to the width of the film; other common film gauges include 8 mm and 35 mm. It is generally used for non-theatrical film-
8 mm film
…by the Eastman Kodak company during the Great Depression and released to the market in 1932 to create a home movie format that was less expensive than 16 mm. Double 8 spools actually contain a 16 mm film with twice as many perforations along each edge as normal 16 mm film; on its first pass through the…
16 mm sound movie showing a variable-width sound track on single-perforation film stock
Two projectionists showing a film on a 16 mm De Vry Simplex Ampro projector in Aldershot, Hampshire, U.K., 1941.
Eastman Kodak color movie from Warsaw dated 1939
Eastman Kodak color movie from Warsaw dated 1939