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  2. Half-frame camera - Wikipedia

    en.wikipedia.org/wiki/Half-frame_camera

    The 3:4 aspect ratio of half frame photos can easily be cropped to 4:5 in portrait orientation without a significant reduction in image quality producing an "Instagram ready" photo. This has been reinforced by Kodak's reintroduction of half frame cameras [9] through the Kodak Ektar branded H35 half frame camera.

  3. Ektar - Wikipedia

    en.wikipedia.org/wiki/Ektar

    Prior to its use on films, the Ektar name originally referred to Eastman Kodak's premium-priced lenses for professional use, which were introduced in 1936 and sold until the 1960s. In contrast to the branding from other lens-makers, Kodak emphasized that the name was a quality mark rather than referring to any particular optical formula. [3]

  4. List of CRT video projectors - Wikipedia

    en.wikipedia.org/wiki/List_of_CRT_video_projectors

    50 inch fixed screen projector with two projector lenses with three tubes. 60 fL on screen brightness. KP-7200 [36] Sony: 1978: No : 480i : 50 [37] Analogue:

  5. Handheld projector - Wikipedia

    en.wikipedia.org/wiki/Handheld_projector

    Handheld projectors, in particular projector phones, could offer new possibilities for mobile gaming, as demonstrated by the adaptation of the PlayStation 3 game LittleBigPlanet. Players can sketch a world on a sheet of paper or use an existing physical configuration of objects and let the physics engine simulate physical procedures in this ...

  6. Movie projector - Wikipedia

    en.wikipedia.org/wiki/Movie_projector

    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. Modern movie projectors are specially built video projectors (see also digital cinema).

  7. Slide projector - Wikipedia

    en.wikipedia.org/wiki/Slide_projector

    Slide projector light generation and collimation system: from left to right, mirror / reflector, bulb, condenser lens 1, green-tinted heat-absorbing glass, condenser lens 2; a centrifugal fan, used to cool the bulb, is visible at the top of the picture. A projector has three main optical elements: [3]: 39–40