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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.
In this guide, I'll touch on all that and look at some of the best lenses for Sony, Canon, Nikon, Fujifilm and Micro Four Thirds mirrorless cameras. How to buy a mirrorless camera lens in 2020 ...
The use of modern precision molded plastic or glass aspheric lens elements has made aspheric lenses common today. 1969 Yashica TL Electro X (Japan): first SLR with all solid-state electronic light metering system. Had a stop-down aperture, full area averaging, CdS light meter linked via a four transistor circuit board to an extinguish-both-red ...
The Canon RF lens mount is an interchangeable-lens mount developed by Canon for its full-frame mirrorless interchangeable-lens cameras, and featured first by the EOS R, followed by the EOS RP. [ 3 ] [ 4 ] [ 5 ] The RF mount was announced in September 2018.
Other lenses for the Contax included the Biotar, Biogon, Orthometar, and various Tessars and Triotars. The last important Zeiss innovation before the Second World War was the technique of applying anti-reflective coating to lens surfaces invented by Olexander Smakula in 1935. [8] A lens so treated was marked with a red "T", short for "Transparent".
The ability to exchange lenses, to select the best lens for the current photographic need, and to allow the attachment of specialized lenses is one of the key factors in the popularity of DSLR cameras, although this feature is not unique to the DSLR design and mirrorless interchangeable lens cameras are becoming increasingly popular.
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