120 is a film format for still photography introduced by Kodak for their Brownie No. 2 in 1901. It was originally intended for amateur photography but was later superseded in this role by 135 film. It survives to this day as the only remaining medium format, popular with professionals and amateur enthusiasts. 120 rollfilm. ... // Movie film formats Amateur formats: 8 mm Single-8 Super 8 mm Polavision 9,5 mm film 17. ... Photography is the process of making pictures by means of the action of light. ... Eastman Kodak Company (NYSE: EK) is a large multinational public company producing photographic equipment. ... The Brownie No 2 The Kodak Brownie box camera, introduced in 1900, was a very simple camera that anyone could use. ... 1901 (MCMI) was a common year starting on Tuesday (see link for calendar) of the Gregorian calendar (or a common year starting on Wednesday of the 13-day-slower Julian calendar). ... 135 Film Size, Kodak Tri-X 400 speed 135 (ISO 1007) is a film format for still photography. ... A size comparison of medium format film, left, and regular 35 mm film. ...

The 120 format is typical of roll film. The spool was originally made of wood with metal flanges, later all metal, and finally plastic. Frame number markings for the three standard image formats are printed on the backing paper. The film is 72 cm long. The roll film was invented by Eastman Kodak, and was the prime factor in making photography available for the common man. ... Spool can mean the following: Bobbin, cylinder or reel for winding yarn, thread, cable, or film. ... Hot metal work from a blacksmith Look up Metal in Wiktionary, the free dictionary. ... Plastic covers a range of synthetic or semisynthetic polymerization products. ...

Frame sizes

The 120 film allows several frame sizes, the most common being the 6 × 6 cm (120 square format), or more exactly 56 × 56 mm. It is sometimes referred to as 2¼ × 2¼ inch film, though this is less common.

Special-purpose panoramic cameras produce 6 × 12 or 6 × 17 cm exposures.

Both 6 × 7 and 6 × 4.5 enlarge almost exactly to 8 × 10 paper, for which reason their proponents call them "ideal formats". The 645 format (6 × 4.5) in particular is the smallest, lightest, least expensive, and most popular roll-film design. Due to better control of frame space, modern 645 format cameras get 16 exposures per roll of 120.

Other roll films of a similar format ("6cm roll films")

The 220 format was introduced in 1965 and is the same width as 120 film, but with double length (144 cm) film and thus twice the number of exposures per roll. Unlike 120 film, there is no backing paper behind the film itself, just a leader and a trailer. This results in a longer film on the same spool. As a result, there are no printed frame numbers, and moreover, it cannot be used in unmodified old cameras that have a red window as frame indicator. Also, since the film alone is thinner than a film with a backing paper, depending on camera type a special pressure plate may be required to achieve optimal focus. Some cameras capable of using both 120 and 220 film will have a two position adjustment of the pressure plate while others will require different film backs. 1965 (MCMLXV) was a common year starting on Friday (the link is to a full 1965 calendar). ... The focus or image point is the point where light rays, originating from a point in the object, converge [1]. The principal focus or focal point of a lens or parabolic mirror is the point onto which collimated light parallel to the axis is focused. ...

The 620 format was introduced by Kodak in 1931 as an intended alternative to the 120 format and is essentially the same film on a thinner and narrower all metal spool (the 120 spool was made of wood at that time): Eastman Kodak Company (NYSE: EK) is a large multinational public company producing photographic equipment. ... 1931 (MCMXXXI) was a common year starting on Thursday (link is to a full 1931 calendar). ...

• 120 2.466" length, 0.990" flange, 0.468" core
• 620 2.468" length, 0.905" flange, 0.280" core

The 620 format was discontinued by Kodak in 1995, but it is possible to re-wind 120 film onto a 620 spool in the darkroom to enable use of 620 cameras. Eastman Kodak Company (NYSE: EK) is a large multinational public company producing photographic equipment. ... 1995 (MCMXCV) was a common year starting on Sunday of the Gregorian calendar. ...

The 105 format was introduced by Kodak in 1898 for their first folding camera and was the original 6 × 9 cm format roll film. The 117 format was introduced by Kodak in 1900 for their first Brownie camera, the No.1 Brownie, 6 × 6 cm format. These formats used the same width film as 120 film, but with slightly different spools. The 105 spool has a much wider flange, similar to the 116 spool. The 117 spool is slightly narrower than the 120. Eastman Kodak Company (NYSE: EK) is a large multinational public company producing photographic equipment. ... 1898 (MDCCCXCVIII) was a common year starting on Saturday (see link for calendar) of the Gregorian calendar (or a common year starting on Monday of the 12-day-slower Julian calendar). ... A folding camera is a camera that can be folded to a compact and rugged package when not in use. ... Eastman Kodak Company (NYSE: EK) is a large multinational public company producing photographic equipment. ... 1900 (MCM) was an exceptional common year starting on Monday. ... The Brownie No 2 The Kodak Brownie box camera, introduced in 1900, was a very simple camera that anyone could use. ...