The 8-blade diaphragm and maximum aperture of f/1.0 give this lens the ability to create extremely shallow depth of field effects and to support low light situations. In common with the EF 85mm f/1.2L USM it uses an electronic "focus by wire" system and requires power from the camera in order to manual focus. It also features a wide rubber focus ring that is damped, a distance window with infrared index, and the ability to set the focus range from 0.6m to infinity, or 1m to infinity. This lens has a metal body and mount, and plastic extremities. It was the fastest SLR lens in production during its lifetime. On the used market sells for as much as double the original retail value. The discontinued EF50mm f/1.0L USM is a professional L series autofocus lens. f/1.8 II (discontinued, replaced by f/1.8 STM).f/1.8 (discontinued, replaced by f/1.8 II).f/1.0L USM (discontinued, replaced by f/1.2L USM).Seven EF 50mm lenses have been sold by Canon: When pairing a 50mm lens to a Canon DSLR with an APS-C sized sensor, the crop factor effectively turns the 50mm focal length into an 80mm field of view. Ĭanon 50mm lenses have an EF type mount that fits the Canon EOS line of cameras. The 50mm focal length, when used with a 35mm film or full-frame sensor, has been widely considered to match the perspective seen by the human eye. These lenses are based on the classic double-Gauss lens, with the f/1.8 being a standard six-element double-Gauss with an air gap and powers between element 2 and 3 and its faster cousins adding additional elements. The EF 50mm lenses are a group of normal prime lenses made by Canon that share the same focal length. Front and rear views of a Canon EF50mm f/1.4 USM
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