This article is about the Zeiss lens. For other uses, see Planar (disambiguation).
Zeiss Planar
Introduced in
1896
Author
Paul Rudolph
Construction
6 elements in 4 groups
Aperture
f/4.5
The Zeiss Planar is a photographic lens designed by Paul Rudolph at Carl Zeiss in 1896. Rudolph's original was a six-element symmetrical double Gauss lens design.
While very sharp, early versions of the lens suffered from flare due to its many air-to-glass surfaces. Before the introduction of lens coating technology, the four-element Tessar, with slightly inferior image quality, was preferred due to its better contrast. In the 1950s, when effective anti-reflective lens coatings became available, coated Planars were produced with much-improved flare resistance. These lenses used the Zeiss T coating system, which had been invented by Olexander Smakula in 1935.[1] They performed very well as normal and medium-long focus lenses for small and medium format cameras. One of the most notable Planar lenses is the high-speed f/2.0/110 mm lens for the 2000- and 200-series medium format Hasselblad cameras with a similar version available for the Rolleiflex 6000 series cameras.
Carl Zeiss T* Planar 50/1.4, 50/1.7
Carl Zeiss T* Planar 50/1.4 lens
^History of Camera Lenses from Carl Zeiss - 1935 - Alexander Smakula develops anti-reflection coating
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