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  2. Pancake lens - Wikipedia

    en.wikipedia.org/wiki/Pancake_lens

    This is a list of autofocus prime lenses designed for mirrorless cameras that measure less than 30 millimeters in length — limit one per brand and focal length combination. In 2024, Viltrox released the thinnest autofocus pancake lens ever produced for full-frame sensors: a 28mm F4.5 lens that is only 15mm thick.

  3. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    Caused by a foreign body, dust, sand, or grit trapped under the lens. Corneal edema Caused by decreased oxygen delivery to the tissue compressed by the lens. Usually resolved after the removal of the lenses. Discomfort upon lens removal may be seen. Neovascularization New blood vessels may form in the iris region and the limbus. This may impair ...

  4. List of Polaroid instant cameras - Wikipedia

    en.wikipedia.org/wiki/List_of_Polaroid_instant...

    Polaroid Now+ Generation 2 [19] Polaroid I-2 (2023) – one 98 mm f /8 lens with lidar autofocus; shooting modes available from the camera itself include automatic, shutter priority, aperture priority, and fully manual. (Note: lens equivalent to 38mm equivalent angle of view and f /2.8 in 35 mm film or full frame digital format.) [20] [21] [22 ...

  5. Instant camera - Wikipedia

    en.wikipedia.org/wiki/Instant_camera

    One Polaroid and two Fujifilm instant cameras with film Polaroid SX-70 Fujifilm Instax 210 with instant photograph Image of a developed analog Polaroid Film depicting Preikestolen An instant camera is a camera which uses self-developing film to create a chemically developed print shortly after taking the picture.

  6. Digital single-lens reflex camera - Wikipedia

    en.wikipedia.org/wiki/Digital_single-lens_reflex...

    The angle of view of a lens depends upon its focal length and the camera's image sensor size; a sensor smaller than 35 mm film format (36×24 mm frame) gives a narrower angle of view for a lens of a given focal length than a camera equipped with a full-frame (35 mm) sensor.

  7. Polaroid 20×24 camera - Wikipedia

    en.wikipedia.org/wiki/Polaroid_20×24_camera

    Lenses were available in a variety of focal lengths ranging from 135 mm to 1200 mm, but only the 600 mm, 800 mm, and 1200 mm lenses were designed for the 20×24 format. [ 5 ] The 20×24 is collapsible for storage and transport like a field camera : the bellows are compressed into the body, and the body lowers into its base. [ 6 ]

  8. Polaroid Impulse - Wikipedia

    en.wikipedia.org/wiki/Polaroid_Impulse

    The Polaroid Impulse is a camera produced by Polaroid Corporation between 1988 and 1994. [1] The camera uses Polaroid's 600-series integral film. The Impulse is distinguished from Polaroid's other 600-series cameras by its always-on flash, binocular-style grips, larger viewfinder, and self-timer (autofocus models only).

  9. Twin-lens reflex camera - Wikipedia

    en.wikipedia.org/wiki/Twin-lens_reflex_camera

    A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking lens" (the lens that takes the picture), while the other is used for the viewfinder system, [ 1 ] which is usually viewed from above at waist level.