Zeiss Planar

The Zeiss Planar is a photographic lens designed by Paul Rudolph at Carl Zeiss in 1896. Rudolph's original was a six-element symmetrical design.

This article is about the Zeiss lens. For other uses, see Planar (disambiguation).
Zeiss Planar
Introduced in1896
AuthorPaul Rudolph
Construction6 elements in 4 groups
Aperturef/4.5

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.

Carl Zeiss T* Planar 50/1.4, 50/1.7
Carl Zeiss T* Planar 50/1.4 lens

See also

Further reading
  • Nasse, H. Hubert (July 2011). "From the series of articles on lens names: Planar" (PDF). Camera Lens Blog (CLB) (40th ed.). Carl Zeiss AG, Camera Lens Division. Retrieved 2013-06-08. (NB. German: )

References
  1. History of Camera Lenses from Carl Zeiss - 1935 - Alexander Smakula develops anti-reflection coating
  • Carl Zeiss lenses
  • Carl Zeiss SLR Lenses - Planar T* 1,4/50


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