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Tessar

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The Zeiss Tessar is a famous photographic lens design conceived by Paul Rudolph in 1902.

The Tessar is an evolution of the Cooke Triplet design.

A Tessar comprises four elements in three groups, one positive crown glass element on the front, one negative flint glass element at thee center and a negative flint glass element cemented with a positive crown glass element at the rear.

File:Zeiss Tessar.png

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