In 1929, Fox introduced Fox Grandeur, the first 70 mm film format, but it quickly fell from use. The desire to increase the visual impact of film has a long history. This technique produces an area that is about 8.3 times as large as the 35 mm format, and about 3.4 times as large as 70 mm film run through the projector vertically. The IMAX film standard uses 70 mm film run through the projector horizontally.
History A comparison between 35 mm and 15/70 mm negative areas.
4K LASER PROJECTOR FULL
Since 2018, the Laser system has been employed to retrofit full dome installations, with limited results due to the large area of a dome screen. Both technologies are purely digital and suitable to retrofit existing theaters. Later came the introduction of the IMAX Digital 2K and IMAX with Laser 4K in 20 respectively, still limited in respect to the 70 megapixels of equivalent resolution of the original 15/70 film. The MPX projectors were solely used to retrofit existing multiplex auditoriums, losing much of the quality of the GT experience. The SR system featured slightly smaller screens than GT theatres, though still in purpose-built auditoriums with a 1.43:1 aspect ratio. To reduce costs, the IMAX SR and MPX systems were introduced in 19, respectively, to make IMAX available to multiplex and existing theaters. The high costs involved in the construction and maintenance of the dedicated buildings and projectors suggested the introduction of several compromises in the following years. It is used exclusively in purpose-built theaters and dome theaters, and many installations limit themselves to a projection of high quality, short documentaries. It uses very large screens of 18 by 24 metres (59 by 79 feet) and, unlike most conventional film projectors, the film runs horizontally so that the image width can be greater than the width of the film stock. IMAX GT is the large format as originally conceived.
Shaw were the co-founders of what would be named the IMAX Corporation (founded in September 1967 as Multiscreen Corporation, Limited), and they developed the first IMAX cinema projection standards in the late 1960s and early 1970s in Canada. Graeme Ferguson, Roman Kroitor, Robert Kerr, and William C. IMAX is a proprietary system of high-resolution cameras, film formats, film projectors, and theaters known for having very large screens with a tall aspect ratio (approximately either 1.43:1 or 1.90:1) and steep stadium seating, with the 1.43:1 ratio format being available only in few selected locations.
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