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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]
The Canon Extender EF 1.4x II Image of the Canon 2x III Extender. The Canon Extender EF lenses are a group of teleconverter lenses made by Canon. These lenses are used between any compatible EF type lens and any of the Canon EOS line of cameras. When used with a compatible lens, they will multiply the focal length of the lens by a factor of ...
For example, the Canon EF 50mm f / 1.8 II or Nikon AF Nikkor 50mm f / 1.8D are very inexpensive, but quite fast and optically well-regarded. Old fast manual focus lenses, such as the Nikkor-S(C) or Nikkor AI-S 50mm f / 1.4, or Canon's FD and M39 counterparts, were historically produced abundantly, and are thus sold relatively inexpensively on ...
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Canon New FD lens mounting surface.. The FD lens mount is a breech-lock mount, which is a variation of the common triple-flanged bayonet attachment. The advantage of the breech-lock over the bayonet is that neither the contact surfaces between the body and lens, nor the signalling mechanisms, rotate against each other when the lens is mounted.
Leica Summilux-M 50 mm f /1.4 Version 2 (1961 – 1968) Leica Summilux 35 mm f /1.4 Version 1 Optical Diagram of Leica Summilux-R 50mm f/1.4 II lens.. The name Summilux is used by Leica and Panasonic Lumix to designate camera lenses that have a maximum aperture brighter than f/2, typically at f/1.4, but dimmer than f/1.0.
In 1987 Canon was the first to use USM (Ultrasonic Motor) with the Canon EF 300mm f/2.8L USM. [19] In 1989 Canon was the first to create a full frame f/1.0 AF (AutoFocus) lens and the only one until today with the Canon EF 50mm f/1.0L USM. In 1993 Canon was the first to create an interchangeable 10× superzoom lens for SLR cameras.
The EF 35mm f / 1.4L II USM is a successor of the EF 35mm f / 1.4L USM. It was announced at the 27th of August 2015 and is available since October same year. [1] The EF 35mm f / 1.4L II USM lens is the first lens in Canon line up to use a Blue Spectrum Refractive Optics element (BR element) to reduce the chromatic aberration at the blue end of the spectrum. [2]