The Rapid Rectilinear also named Aplanat is a famous
photographic lens
A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capab ...
design.
The Rapid Rectilinear is a lens that is symmetrical about its
aperture stop
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane.
An optic ...
with four elements in two groups. It was introduced by
John Henry Dallmeyer John Henry Dallmeyer (6 September 183030 December 1883), Anglo-German optician, was born at Loxten, Westphalia, the son of a landowner.
On leaving school at the age of sixteen he was apprenticed to an Osnabrück optician, and in 1851 he came to Lo ...
in 1866. The symmetry of the design greatly reduces
radial distortion, improving on the
Petzval lens
Joseph Petzval (6 January 1807 – 17 September 1891) was a mathematician, inventor, and physicist best known for his work in optics. He was born in the town of Szepesbéla in the Kingdom of Hungary (in German: Zipser Bela, now Spišská Belá in ...
.
See also
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Rectilinear lens
In photography, a rectilinear lens is a photographic lens that yields images where straight features, such as the edges of walls of buildings, appear with straight lines, as opposed to being curved. In other words, it is a lens with little or no ...
References
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External links
Rapid Rectilinear article
Photographic lens designs
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