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  2. Canon EF lens mount - Wikipedia

    en.wikipedia.org/wiki/Canon_EF_lens_mount

    Number of Canon EF lenses sold over time (red), compared with Nikon F mount lenses (blue) The EF mount replaces its predecessor, the FD mount.The standard autofocus lens mounting technology of the time used a motor in the camera body to drive the mechanics of the focus helicoid in the lens by using a transfer lever.

  3. Canon EF-S 10–22mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF-S_10–22mm_lens

    The Canon EF-S 10–22mm f / 3.5–4.5 USM lens is a wide to ultra-wide angle zoom lens for Canon digital single-lens reflex cameras with a Canon EF-S lens mount. [1] The field of view has a 35 mm equivalent focal length of 16–35mm, which is analogous to the EF 16–35mm f / 2.8L on a full-frame camera. The 10–22mm is an internal focusing lens.

  4. Canon EF-S 18–55mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF-S_18–55mm_lens

    The Canon EF-S 18–55mm lens f / 3.5–5.6 is a Canon-produced wide-angle to mid telephoto zoom lens for digital single-lens reflex cameras with an EF-S lens mount. The field of view has a 35 mm equivalent focal length of 28.8–88mm, and it is a standard kit lens on Canon's consumer APS-C DSLRs.

  5. Canon EF 600mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF_600mm_lens

    The Canon EF 600mm is a super-telephoto lens made by Canon Inc. The lens has an EF mount to work with the EOS line of cameras. f / 4L USM lens was released in November 1988 (923,000 yen). [1] f / 4L IS USM lens was released in September 1999 (1,290,000 yen). [2] f / 4L IS II USM lens was announced in February 2011 (US$12,999 at release, now US ...

  6. Schneider Kreuznach - Wikipedia

    en.wikipedia.org/wiki/Schneider_Kreuznach

    A wide-angle process lens with 4 elements in 4 groups, optimized for reproduction ratios between 2:1 and 1:2. The 270 mm lens has an angle of coverage of 72°, the 240 mm has 80°, and the 210 mm has 86°, which give these lenses gigantic image circles, though the image softens considerably near the edges of coverage. 210mm f/11 (for 20×24 in)

  7. Angle of view (photography) - Wikipedia

    en.wikipedia.org/wiki/Angle_of_view_(photography)

    So a standard 50 mm lens for 35 mm photography acts like a 50 mm standard "film" lens even on a professional digital SLR, but would act closer to a 75 mm (1.5×50 mm Nikon) or 80 mm lens (1.6×50mm Canon) on many mid-market DSLRs, and the 40-degree angle of view of a standard 50 mm lens on a film camera is equivalent to a 28–35 mm lens on ...

  8. Canon EF 100-400mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF_100-400mm_lens

    The EF 100–400 mm f / 4.5–5.6L IS USM is a professional EF mount telephoto zoom lens manufactured by Canon Inc. The first version of this lens was announced in September 1998, and an updated version was announced in November 2014. It is a high performance telephoto lens most often used for sports and wildlife photography.

  9. Tamron - Wikipedia

    en.wikipedia.org/wiki/Tamron

    Tamron head office in Minuma-ku, Saitama, Japan. Tamron Co., Ltd. (株式会社タムロン, Kabushiki-gaisha Tamuron) is a Japanese company manufacturing photographic lenses, optical components and commercial/industrial-use optics.

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