In 1889, Thomas Edison was experimenting with motion pictures and needed long rolls of film, 35 millimeters wide, with holes perforated on the edges so the footage could be driven by sprocket wheels. He contacted George Eastman and Kodak initially produced the film on a limited basis. Soon, 35mm film became the standard format for motion pictures.
A few years later, small still cameras were manufactured to use this format. In 1934, cartridges were introduced for daylight loading and given the designation of 135. This innovation caused 35mm to become the most popular format of all time and still popular today.