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Thread: Voigtlander Apo-Skopar w/ aperture ring AND waterhouse stops??

  1. #1

    Join Date
    Mar 2019
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    91

    Voigtlander Apo-Skopar w/ aperture ring AND waterhouse stops??

    I'm about to buy a Voigtlander Apo-Skopar 600mm, it has an aperture ring AND waterhouse stops. On one side of the ring F-stops are engraved, on the other side numbers 10, 20, 30,... 60. Serial nr is 5075xxx so it should be from 1960. The seller doesn't know anything, does anyone here have any relevant information?

    Images: https://www.dropbox.com/s/0n86vw7w7u...l1600.jpg?dl=0
    and https://www.dropbox.com/s/0koz93wppn...1600c.jpg?dl=0

  2. #2

    Join Date
    Dec 2001
    Location
    NJ
    Posts
    8,469

    Re: Voigtlander Apo-Skopar w/ aperture ring AND waterhouse stops??

    All this is perfectly normal for process lenses such as the Apo Skopar. Waterhouse stops with circular holes act as stops, as does the diaphragm. Those with square or diamond shaped holes shape dots for photogravure. The numbers 10, 20, ... are used to orient them.

    The Apo-Skopar is heliar type like the Boyer Apo-Saphir. Apo-Skopars' cemented elements are prone to separations. If you can, check for this before buying.
    Last edited by Dan Fromm; 29-Dec-2020 at 10:50.

  3. #3

    Join Date
    Mar 2019
    Posts
    91

    Re: Voigtlander Apo-Skopar w/ aperture ring AND waterhouse stops??

    Thanks Dan, that helps. And I'll check for separation.

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