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  2. Canon EF 28mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF_28mm_lens

    The EF 28mm lenses are a group of prime lenses made by Canon that share the same focal length. These lenses use the EF type mount that fits the Canon EOS line of cameras. When used on a camera body with an APS-C sensor, such as the Canon EOS 700D , it provides a narrower field of view, equivalent to a 45 mm lens mounted on a 35 mm frame body.

  3. Kiron Corporation - Wikipedia

    en.wikipedia.org/wiki/Kiron_Corporation

    Kiron Corporation was a subsidiary of Kino Precision Industries, Ltd., a Japanese manufacturer of photographic lenses.Kiron was based in Carson, California, operating in the 1980s primarily as the United States distributor of Kiron lenses, which were offered in a variety of mounts compatible with many popular 135 film manual focus single-lens reflex camera systems.

  4. Prime lens - Wikipedia

    en.wikipedia.org/wiki/Prime_lens

    Not all prime lens are physically small; those with internal autofocus stepping motors, such as this 85mm f /1.4 prime lens, are larger in overall size compared to motorless counterparts. Many lens manufacturers produce or produced prime lenses at or near the following focal lengths: 20 mm, 24 mm, 28 mm, 35 mm, 40 mm, 50 mm, 85 mm, 105 mm, 135 ...

  5. Canon EF 50mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF_50mm_lens

    Front and rear views of a Canon EF50mm f/1.4 USM. The EF 50mm lenses are a group of normal prime lenses made by Canon that share the same focal length.These lenses are based on the classic double-Gauss lens, [1] with the f/1.8 being a standard six-element double-Gauss with an air gap and powers between element 2 and 3 [1] and its faster cousins adding additional elements. [2]

  6. Photographic lens design - Wikipedia

    en.wikipedia.org/wiki/Photographic_lens_design

    Example of a prime lens - Carl Zeiss Tessar. The type of lens being designed is significant in setting the key parameters. Prime lens - a photographic lens whose focal length is fixed, as opposed to a zoom lens, or that is the primary lens in a combination lens system. Zoom lenses - variable focal length lenses. Zoom lenses cover a range of ...

  7. Canon L lens - Wikipedia

    en.wikipedia.org/wiki/Canon_L_lens

    The 70-200 mm f/2.8L lens. Canon's series of L lenses (Luxury lenses) are a professional line of photography lenses made by Canon.Canon has sold zoom and prime L-series lenses for the discontinued FD lens mount, for the current EF lens mount used on all Canon EOS SLR cameras and for the RF mount used on mirrorless interchangeable-lens cameras.

  8. History of photographic lens design - Wikipedia

    en.wikipedia.org/wiki/History_of_photographic...

    However, for the record: the first autofocus lens for a still camera was the Konishiroku Konica Hexanon 38mm f/2.8 [171] built into the Konica C35 AF (1977, Japan) 35mm point-and-shoot; the first autofocus lens for an SLR camera was the unnamed 116mm f/8 [172] built into the Polaroid SX-70 Sonar (1978, USA) instant film SLR; the first ...

  9. Minolta A-mount system - Wikipedia

    en.wikipedia.org/wiki/Minolta_A-mount_system

    An entry-level camera, exposure mode was program AE only, with a high-speed program option, no Creative Expansion Card support. An even more basic Maxxum, this camera was basically for the point-and-shoot user that wanted a system SLR camera with interchangeable lenses and more powerful flashes, but did not want the features on, or did not want to pay for the 5000i, 7000i, 8000i cameras.