Published in Spring 2005 Zeiss Historica Journal
Author: Bernd Otto
See Pages 5 – 10.
The author reviews many special alterations of Zeiss Ikon cameras for the military and also gives an overview of important engravings that appear on some of these cameras.
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Published in Spring 1984 Zeiss Historica Journal
Author:Robert G. Pins
See Page 3.
A discussion on the possible changes to the external and internal parts of the Conntax cameras during World War II. This includes external markings and changes to internal parts and the use of solvents and other methods to facilitate use in extreme climates.
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