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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]
Canon FX with FL 50mm f/1.8. Canon FL refers to a lens mount standard for 35mm single-lens reflex cameras from Canon. It was introduced in April 1964 with the Canon FX camera, replacing the previous Canon R lens mount. The FL mount was in turn replaced in 1971 by the Canon FD lens mount. FL lenses can also be used on FD-mount cameras.
The lens has a self-contained autofocus system that does not require autofocus electronics in the camera body. Canon, unlike Minolta and Nikon, was convinced that having the motor in the lens was the optimal approach; this line of thinking continued with the new EOS system in 1987, which remains Canon's standard mounting system for SLRs today.
It starts off "The EF 50mm lens is a normal prime lens made by Canon Inc", implying that it talks about a single lens. In fact, it talks about six completely different lenses. Two of these are no longer in production, so the use of the present tense in the opening sentence seems dubious.
A fast prime (fixed focal length) lens, the Canon 50mm f / 1.4 (left), and a slower zoom lens, the Canon 18–55mm f / 3.5–5.6 (right); this lens is faster at 18mm than it is at 55mm. Lens speed is the maximum aperture diameter, or minimum f-number , of a photographic lens .
Canon EF 35–105mm lens; Canon EF 35-135mm lens; Canon EF 35–350mm lens; Canon EF 50-200mm lens; Canon EF 50mm lens; Canon EF 70–210mm lens; Canon EF 75–300mm lens; Canon EF 90–300mm lens; Canon EF 100-400mm lens; Canon EF 135mm lens; Canon EF 300mm lens; Canon EF 400mm lens; Canon EF 1200mm lens; Canon Extender EF; Canon TS-E 17mm ...
It is one of the first lenses in the Canon EF series. [1] In June 1988, Canon announced the EF 50-200mm f / 3.5-4.5L lens. This lens has very similar physical qualities compared to the EF50-200mm f / 3.5-4.5. [2] The main difference is that this is an L lens, meaning that the lens contains special lens elements which better correct for various ...
Canon A-1 with a FD 50/1.8 Viewfinder of a Canon A-1. The right number is the current F-number (1.8), meaning that the aperture is fairly wide open. The left number (45) indicates the approximate shutter speed of 45 −1 s (the camera can select odd shutter speeds, but does not display them)