Prime lens
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In film and photography, a prime lens is a fixed focal length photographic lens, typically with a maximum aperture from f/2.8 to f/1.2. The term can also mean the primary lens in a combination lens sy
A 29 mm prime lens accompanied by a diagram of its internal lens elements.
Prime lenses have large apertures, compared with zoom lenses. These 85 mm lenses have maximum apertures of f/1.8 (left) and f/1.2 (right).
The Canon EF 50 mm f/1.8 II.
Three 50 mm prime lenses from Minolta with different design parameters. The left lens with lens speed 3.5 is for macro photography, where lens speed is of less concern. The middle one has lens speed 1.7, such a type comes as standard with many SLRs. The right lens has lens speed 1.2 and thus enables shorter shutter speeds in the same light situation.
Normal lens
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In photography and cinematography, a normal lens is a lens that reproduces a field of view that appears "natural" to a human observer. In contrast, depth compression and expansion with shorter or long
Prime lens
…fewer optical aberration issues. Larger maximum aperture (smaller f-number) facilitates photography in lower light, and a shallower depth of field. A normal lens or "normal prime" is a lens with a focal length about equal to the diagonal size of the film or sensor format, or that reproduces perspective that…
Four "normal" lenses for the 35 mm format.