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    IMAX, the super-sized film system, showed its first film in Osaka, Japan during Expo '70. How does the IMAX increase the resolution of its film?

    Question #89218. Asked by BRY2K. (Nov 30 07 4:49 AM)


    zbeckabee

    		The intent of IMAX is to dramatically increase the resolution of the image by using much larger film stock at a resolution comparable to about 10000 x 7000 pixels. To do this, 70 mm film stock is run "sideways" through the cameras. While traditional 70 mm film has an image area that is 48.5 mm wide and 22.1 mm tall (for Todd-AO), in IMAX the image is 69.6 mm wide and 48.5 mm tall. In order to expose at standard film speed of 24 frames per second, three times as much film needs to move through the camera each second.

    More follows at:


    http://en.wikipedia.org/wiki/Imax#Technical_aspects

    Nov 30 07, 6:15 AM

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