lens ring
11Canon FD 135 mm lens — Several different models of Canon FD 135 mm lenses were produced by Canon Inc. for the Canon FD lens mount. Two were produced in the original Old FD style with a silver locking ring for the breech lock mount at the base, while three models were… …
12Canon EF lens mount — The EF lens mount allows all the Canon EF lenses to be used on any of the Canon EOS line of cameras made by Canon Inc.Unlike the EF s breech lock predecessor, the FD mount, the EF mount uses a bayonet style mount. EF stands for Electro Focus :… …
13Einstein ring — Gravitational Lensing Formalism Strong lensing …
14Canon EF 50mm lens — The EF 50mm lenses are a group of normal prime lenses made by Canon Inc. that share the same focal length.These lenses have an EF type mount, that fits the Canon EOS line of cameras.When used on a digital EOS body with a field of view… …
15History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
16Canon EF 85mm lens — The EF 85mm lenses are a group of medium telephoto prime lenses made by Canon Inc. that share the same focal length.These lenses have an EF type mount, that fits the Canon EOS line of cameras. Focal lengths of 70mm to 200mm are usually used for… …
17Canon FD lens mount — The Canon FD lens mount is a physical standard for connecting a photographic lens to a single lens reflex camera body. The standard was developed by Canon of Japan and was introduced in March 1971 with the Canon F 1 camera. It was the primary… …
18Canon EF 500mm lens — Infobox photographic lenses name = EF 500mm f4/L USM caption = From left to right : EF 28 300mm f/3.5 5.6L IS USM, 70 200 f/2.8L IS USM, 300mm f/2.8L IS USM, 500mm f/4L IS USM maker = Canon feat is = y feat usm = y feat sbf = feat macro = feat… …
19Canon L lens — An L lens is a line of SLR photography lenses made by Canon.L lenses are Canon s top of the line lenses. The L officially stands for Luxury , a reference to the lenses high price and build. Some have rumoured that L originally stood for… …
20Gravitational lens — Gravitational Lensing Formalism Strong lensing …
