In 1965, Super-8 film was released and quickly took hold of the amateur
market. It featured a slightly better quality image and was easier to use
mainly due to a cartridge-loading system which did not require re-loading
Sometimes, the improvement was not as apparent, since the film gate in some cheap Super 8 cameras was plastic as was the pressure plate, which was built in to the cartridge, whereas standard 8 cameras often had a permanent metal film gate that better kept the image in focus.
The Kodak Super-8 system was by far the most popular format. It was at one point available with a magnetic sound track at the edge of the film but this only made up 5 to 8% of Super-8 sales and was discontinued in the 1990s.
Launched in 1965, Super-8 film comes in plastic light-proof cartridges containing coaxial supply and take-up spools loaded with 50 feet of film. This was sufficient film for 3 minutes and 20 seconds of continuous filming at 18 frames per second for amateur use, for a total of approximately 3600 frames per film cartridge.
Kodak proudly point out that the Super-8 plastic cartridge is probably the fastest loading film system ever developed as it can be loaded into the Super-8 camera in less than two seconds without the need to directly thread or even touch the film.
The original Super-8 film release was a silent system only. In 1973 a sound on film version was released. The sound film had a magnetic soundtrack and came in larger cartridges than the original so as to accommodate a longer film path. (This was required for smoothing the film movement before it reached the recording head) A second aperture was also needed for the recording head.
film was generally filmed at a speed of 18 or 24 frames per second.