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It was manufactured by Canon for use on the EOS photographic system. It is a manual focus lens for the EF mount and is specifically designed for macro photography . Unlike other macro lenses, such as the EF50mm f/2.5 Compact Macro and the EF-S60mm f/2.8 Macro USM , it does not focus to infinity and cannot be used for conventional photography.
Canon in 2011 made the first fisheye zoom lens, both circular and rectangular. That lens was the Canon EF 8-15mm f/4L Fisheye USM. Canon in 2012 made the first wide angle lens with Image Stabilization. That lens was the Canon EF 24mm f/2.8 IS USM. Canon in 2013 created the first telephoto with built-in 1.4× extender.
Lens without and with a conical chopped petal (or tulip) lens hood (Canon EF 28–105 mm f / 3.5–4.5 USM II). Praktica camera – lens with a conical collapsible rubber lens hood (50 mm f / 2.8). Lens hoods with an extending bellows design (much like the bellows of a medium or large format camera) can be adjusted for depth.
The Canon EF 75–300mm f / 4–5.6 III lens. Introduced in 1991, the Canon EF 75–300mm f / 4–5.6 lens is a telephoto zoom lens for Canon EOS single-lens reflex cameras with an EF lens mount. There are 3 basic types of the lens: the IS USM (Image Stabilization, Ultra Sonic Motor), the USM (USM, no IS) and non-USM (no USM, no IS).
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.
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