prime lens
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Prime lens — In film and photography, a prime lens is either a photographic lens whose focal length is fixed, as opposed to a zoom lens, or it is the primary lens in a combination lens system.Confusion can sometimes result due to the two meanings of the term… … Wikipedia
Prime — can refer to: * Prime number, an integer greater than 1 which is only divisible by 1 and itself * Prime (symbol), the ′ mark ** 3′ end and 5′ end ( three prime end , five prime end ) in biochemistry * Prime (liturgy), a liturgical office (service … Wikipedia
Lens (optics) — For other uses, see Lens. A lens. Lenses can be used to focus light. A lens is an optical device with perfect or approximate axial symmetry which tra … Wikipedia
Lens speed — refers to the maximum aperture diameter, or minimum f number, of a photographic lens. A lens with a larger maximum aperture (that is, a smaller minimum f number) is a fast lens because it delivers more light intensity (illuminance) to the focal… … Wikipedia
Canon 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 :… … Wikipedia
History 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… … Wikipedia
Zoom lens — Nikkor 28 200 mm zoom lens, extended to 200 mm at left and collapsed to 28 mm focal length at right A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed… … Wikipedia
Canon 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… … Wikipedia
Canon EF 135mm lens — EF 135mm f/2L USM= The Canon EF 135mm f/2L USM is a short or medium telephoto lens. The 135/2 is mainly used for portrait photography and for indoor sports, where the lighting is often poor. The fast f/|2|link=yes aperture makes the lens ideal… … Wikipedia
Canon EF 14mm lens — Infobox photographic lenses name = EF14mm f/2.8L USM maker = Canon feat is = n feat usm = y feat sbf = n feat macro = n feat special = type = ultra wide angle prime lens application = architectural, interiors, general flength = 14 mm fov = 1.0… … Wikipedia
