Tessar Lens
Based on special high refractive glass types invented by Schott glass works and a lens design by Dr. Paul Rudolph the Tessar® lens became world famous for its sharpness: ”the eagle eye of your camera”. The original Tessar lens is a 4-element design – this is expressed by that name, referring to the Greek word ’tessares’, which means ’four’.
Typical Tessar Lenses:
 |  |
Tessar T* 2,8/45 lens for
Contax SLR Cameras. | Tele-Apotessar T* 4/400 lens
for Contax N Cameras. |
The Tessar approach leads to compact lenses with low weight. The Tele-Tessar lens design, invented by Dr. Willy Walter Merté at Carl Zeiss in 1919, can enable stunning things like channeling a 500 mm f/8 image ray bundle of 63 mm diameter through a central shutter with only 24 mm opening diameter!
The Tessar design is the preferred approach, when weight and bulk need to be kept low, which is always desirable with long telephoto lenses of 350 mm and beyond.
Vario-Tessar Lens
The Vario-Tessar lens is a modern descendant of the Zeiss Tessar lens type, which was introduced over 100 years ago by Dr. Paul Rudolph of Carl Zeiss in 1902, and has became world famous as "the eagle eye of your camera".
Many photo historians consider the Zeiss Tessar lens the most successful camera lens design ever. The lens is optimized for the demands of very compact photo cameras that are convenient to carry and use, both analog and digital, and produces top quality images that are brilliant and sharp, offer good contrast and well controlled distortion. In compact cameras, the Vario-Tessar enables very compact camera bodies with pleasing design, moderate zoom range and a quick auto focus system.
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