Zeiss redesigned the Stereotar for the Contax, and in 1952 released the 3.5 version. It differed from the pre-war version as the lens contains part of the rangefinder optics in an arm, similar to that which was found on the pre-war Nettax camera. Because the rangefinder base was shortened of the post-war cameras, it will only rangefinder couple with them.
It was provided with a prism for distances over 2.5 meters, providing the greater stereo separation needed. It also came with a separate viewfinder and a Contameter close up set. There were also accessory close up lenses mounted to a frame to define the focus and frame. They were available in lengths of 6, 9 and 13cm.
1200 were made, and it is still an expensive and desirable addition to any Contax collection.
The Stereotar C mounted on a Contax IIa
The same outfit, but with the prism attached for distances of over 2.5 meters
The back of the lens, showing the septum
The back of the prism, with it's two specialized caps
The fitted case that holds it all
A boxed outfit! The finder was sold separately and would not be in the box.
Another look at the Stereotar in it's box.
The Stereotar instruction book.