Tessar
Sign in to saveThe Tessar is a photographic lens design conceived by the German physicist Dr. Paul Rudolph in 1902 while he worked at the Zeiss optical company and patented by Zeiss in Germany; the lens type is usually known as the Zeiss Tessar. Since its introduction, millions of Tessar and Tessar-derived lenses have been manufactured by Zeiss and other manufacturers, and are still produced as excellent intermediate aperture lenses.
Key facts
- Lens design.scheme
- Tessar.png
- Lens design.year
- 1902
- Lens design.author
- Paul Rudolph
- Lens design.elements
- 4
- Lens design.groups
- 3
- Lens design.aperture
- 6.3 (1902)4.5 (1907)2.8 (1930, by Willy Merté)
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Wikidata facts
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- Commons category
- Carl Zeiss Tessar lenses
Sources (1)
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Article
13 sectionsContents
- History
- Beginnings
- Improvements and evolutions
- ''Tessar''-derived lenses
- Leitz ''Elmar''
- Pro Tessar
- Licensed ''Tessar'' lenses / ''Vario-Tessar''{{anchor|Vario-Tessar}}
- Design
- Common uses
- Focusing methods
- See also
- Further reading
- References
The Tessar is a photographic lens design conceived by the German physicist Dr. Paul Rudolph in 1902 while he worked at the Zeiss optical company and patented by Zeiss in Germany; the lens type is usually known as the Zeiss Tessar. Since its introduction, millions of Tessar and Tessar-derived lenses have been manufactured by Zeiss and other manufacturers, and are still produced as excellent intermediate aperture lenses.
The Tessar design uses four spherical lens elements in three groups, one positive crown glass element at the front, one negative flint glass element at the center and a negative concave flint glass element cemented with a positive convex crown glass element at the rear.