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  2. Movie projector - Wikipedia

    en.wikipedia.org/wiki/Movie_projector

    35 mm movie projector in operation Bill Hammack explains how a film projector works. A movie projector (or film projector) is an opto-mechanical device for displaying motion picture film by projecting it onto a screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras.

  3. LCD projector - Wikipedia

    en.wikipedia.org/wiki/LCD_projector

    A projector's throw ratio is used when installing projectors to control the size of the projected display. [1] For example, if the throw ratio is 2:1 and the projector is fourteen feet away from the screen, then the display width will be seven feet.

  4. IMAX - Wikipedia

    en.wikipedia.org/wiki/IMAX

    The digital format uses dual laser projectors, which can show 1.43 digital content when combined with a 1.43 screen. The film format 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.

  5. 21:9 aspect ratio - Wikipedia

    en.wikipedia.org/wiki/21:9_aspect_ratio

    The main benefit of this screen aspect ratio is a constant display height when displaying other content with a lesser aspect ratio. The 64:27 aspect ratio of "21:9" is an extension of the existing video aspect ratios 4:3 (SDTV) and 16:9 (HDTV), as it is the third power of 4:3, where 16:9 of traditional HDTV is 4:3 squared.

  6. 9.5 mm film - Wikipedia

    en.wikipedia.org/wiki/9.5_mm_film

    A notch in the film was recognised by the projector, which would then project the second frame after it for 3 seconds. By this method, 3 seconds of screen time was available for 1 frame of film, rather than the 42 frames required if the film was projected at the normal rate (which was 14 fps at the very beginning, then it became 16 fps).

  7. Film stock - Wikipedia

    en.wikipedia.org/wiki/Film_stock

    Depending on the manufacturing processes and camera equipment, lengths can vary anywhere from 25 to 2000 feet. Common lengths include 25 feet for 8 mm, 50 feet for Super 8, 100 and 400 feet for 16 mm, 400 and 1000 feet for 35 mm, and 1000 for 65/70 mm.

  8. List of motion picture film formats - Wikipedia

    en.wikipedia.org/wiki/List_of_motion_picture...

    Projection gauge is the film gauge (width) used for the release print. Projection aspect ratio is the image ratio determined by the ratio of the projection dimensions multiplied by the anamorphic power of the projection lenses (1× in the case of spherical lenses). This is also known as the intended theatrical aspect ratio.

  9. Display size - Wikipedia

    en.wikipedia.org/wiki/Display_size

    The size of a screen is usually described by the length of its diagonal, which is the distance between opposite corners, typically measured in inches. It is also sometimes called the physical image size to distinguish it from the "logical image size," which describes a screen's display resolution and is measured in pixels. [1] [2]

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