Standard 8mm Movie Film
The standard 8 mm film format was developed by the Eastman Kodak company during the Great Depression and released on the market in 1932 to create a home movie format that was less expensive than 16 mm. The film spools actually contain a 16 mm film with twice as many perforations along each edge than normal 16 mm film, which is only exposed along half of its width. When the film reaches its end in the takeup spool, the camera is opened and the spools in the camera are flipped and swapped (the design of the spool hole ensures that this happens properly) and the same film is exposed along the side of the film left unexposed on the first loading. During processing, the film is split down the middle, resulting in two lengths of 8 mm film, each with a single row of perforations along one edge, thereby fitting four times as many frames in the same amount of 16 mm film. Because the spool was reversed after filming on one side to allow filming on the other side the format was sometimes called Double 8. The frame size of regular 8 mm is 4.8 mm x 3.5 mm and 1m film contains 264 pictures. Normally Double8 is filmed at 16 frames per second. Common length film spools allowed filming of about 3 minutes to 4.5 minutes at 12, 15, 16 and 18 frames per second. Kodak ceased selling standard 8 mm film in the early 1990s, but continued to produce the film, which was sold via independent film stores. Black-and-white 8 mm film is still manufactured in the Czech Republic, and several companies buy bulk quantities of 16 mm film to make regular 8 mm by re-perforating the stock, cutting it into 25 foot (7.6 m) lengths, and collecting it into special standard 8 mm spools which they then sell. Re-perforation requires special equipment. Some specialists also produce super 8 mm film from existing 16 mm, or even 35 mm film stock.
Reference Wikipedia Standard 8
Super 8 Movie Film
Super 8 mm film, also simply called Super 8, is a motion picture film format released in 1965 by Eastman Kodak as an improvement of the older 8 mm home movie format, and the Cine 8 format. The film is 8 mm wide, exactly the same as the older standard 8 mm film, and also has perforations on only one side. However, the dimensions of the perforations are smaller than those on older 8 mm film, which allowed the exposed area to be made larger. The Super-8 standard also specifically allocates the rebate opposite the perforations for an oxide stripe upon which sound can be magnetically recorded. There are several different varieties of the film system used for shooting, but the final film in each case has the same dimensions. By far the most popular system was the Kodak system.
Reference Wikipedia Super-8
