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Help needed, strange Zeiss lens
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PostPosted: Mon Apr 20, 2015 4:43 pm    Post subject: Reply with quote

There are Patents by Bertele (the original designer of the Sonnars) on an f1.4 version of the Sonnar, dating from 1951:

http://www.artaphot.ch/zeiss/objektive/203-sonnar-5cm-1-1-5


The 6cm f1.4 Sonnar shown here might well be a prototype ("Sonnar-Studie") from the early 1950ties.

Stephan