Published in Spring 2000 Zeiss Historica Journal
Author: Charles Barringer
See Page 12 – 15.
During the early days of the Contax camera, the most difficult lenses to adhere to the standards of Carl Zeiss Jena were the wide angle lenses. In an attempt to address the market needs, short term solutions such as the Orthometar, Wide angle Tessar and Biotars came to the market before Ludwig Bertele designed the 35 mm Biogon.
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