Difference between revisions of "Tessar"
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[[Agfa]] Solinar<br> | [[Agfa]] Solinar<br> | ||
| − | Asahi/[[Pentax]] Macro-Takumar 50mm f/4<br> | + | Asahi/[[Pentax]] Macro-Takumar 50mm f/4 <br> |
| − | [[Bausch & Lomb]] Tessar (under license)<br> | + | [[Bausch & Lomb]] Tessar (under license) <br> |
[[Canon]] 38mm FLP, 50mm f/2.8 and f/3.5 RF lenses, 50mm FL f/3.5 <br> | [[Canon]] 38mm FLP, 50mm f/2.8 and f/3.5 RF lenses, 50mm FL f/3.5 <br> | ||
[[Dallmeyer]] Dalmac, Perfac, Serrac <br> | [[Dallmeyer]] Dalmac, Perfac, Serrac <br> | ||
[[Ernemann]] Ernon <br> | [[Ernemann]] Ernon <br> | ||
| − | [[FED]]/[[KMZ]] Industar<br> | + | [[FED]]/[[KMZ]] Industar <br> |
| − | [[ | + | [[Ilex]] Paragon <br> |
| − | [[ | + | [[Krauss]]-Zeiss Tessar (under license) <br> |
| + | [[Kodak]] Ektar <br> | ||
[[Konica]] Macro-Hexanon AR 55 mm f/3.5 <br> | [[Konica]] Macro-Hexanon AR 55 mm f/3.5 <br> | ||
| − | [[Leitz]] Elmar<br> | + | [[Leitz]] Elmar <br> |
| − | [[Mamiya]] Press lenses - 100mm f/3.5, 127mm f/4.7, 150mm f/5.6<br> | + | [[Mamiya]] Press lenses - 100mm f/3.5, 127mm f/4.7, 150mm f/5.6 <br> |
[[Meyer]] Primotar <br> | [[Meyer]] Primotar <br> | ||
| − | [[Minolta]] Rokkor TLR<br> | + | [[Minolta]] Rokkor TLR <br> |
| − | [[Minox]] Minoxar<br /> | + | [[Minox]] Minoxar <br /> |
[[Nikon]] 45mm GN Nikkor, El-Nikkor 50mm f/4 <br> | [[Nikon]] 45mm GN Nikkor, El-Nikkor 50mm f/4 <br> | ||
[[Plaubel]] Anticomar <br> | [[Plaubel]] Anticomar <br> | ||
| − | [[Rodenstock]] Ysar, Rogonar<br> | + | [[Rodenstock]] Ysar, Rogonar <br> |
[[Ross]] Xtralux <br> | [[Ross]] Xtralux <br> | ||
| − | [[Schneider]] Xenar, Comparon<br> | + | [[Schneider]] Xenar, Comparon <br> |
Taylor & Hobson Apotal, Ental <br> | Taylor & Hobson Apotal, Ental <br> | ||
| − | [[Voigtlander]] Heliostigmat, Skopar<br> | + | [[Voigtlander]] Heliostigmat, Skopar <br> |
| − | [[Wollensak]] Raptar<br> | + | [[Wollensak]] Raptar <br> |
| − | [[Yashica]] Yashinon TLR<br> | + | [[Yashica]] Yashinon TLR <br> |
==Sources== | ==Sources== | ||
Revision as of 21:43, 26 August 2008
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| Cross-section of a 50mm f2.8 Tessar (for 35mm, M42 fitting) |
The Tessar is a camera lens designed by Dr Paul Rudolph, working for the Carl Zeiss Jena company, in 1902. It is normally used as a standard lens, and has been fitted to many millions of cameras.
The design consists of four elements in three groups; the front element is positive, bi-convex (with the rear almost flat), the central a negative bi-concave and, following an aperture, at the rear is a cemented doublet of plano-concave and a bi-convex elements. Though often referred to as a "modified Cooke triplet", the Tessar is actually a development of Rudolph's 1899 Unar (4 element in 4 groups) lens, itself a development of Rudolph's 1890 Zeiss Anastigmat (4 elements in 2 groups) lens.
The original design had a maximum aperture of f/6.3, but the developments in design allowed f/2.8 by 1930.
Ina addition to production by Carl Zeiss, the Tessar name and design (under license) was used in the production of numerous lenses by Bausch & Lomb.
The Tessar design has been widely copied by nearly all major optics companies.
A very partial list includes:
Agfa Solinar
Asahi/Pentax Macro-Takumar 50mm f/4
Bausch & Lomb Tessar (under license)
Canon 38mm FLP, 50mm f/2.8 and f/3.5 RF lenses, 50mm FL f/3.5
Dallmeyer Dalmac, Perfac, Serrac
Ernemann Ernon
FED/KMZ Industar
Ilex Paragon
Krauss-Zeiss Tessar (under license)
Kodak Ektar
Konica Macro-Hexanon AR 55 mm f/3.5
Leitz Elmar
Mamiya Press lenses - 100mm f/3.5, 127mm f/4.7, 150mm f/5.6
Meyer Primotar
Minolta Rokkor TLR
Minox Minoxar
Nikon 45mm GN Nikkor, El-Nikkor 50mm f/4
Plaubel Anticomar
Rodenstock Ysar, Rogonar
Ross Xtralux
Schneider Xenar, Comparon
Taylor & Hobson Apotal, Ental
Voigtlander Heliostigmat, Skopar
Wollensak Raptar
Yashica Yashinon TLR
Sources
- Rudolf Kingslake, A History of the Photographic Lens, Academic Press, 1989
