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Thread: New Resource for Wollensak Lenses and Shutters

  1. #31

    Re: New Resource for Wollensak Lenses and Shutters

    That Wollensak Lenses and Shutter Resource has been great the last couple of weeks as I am trying to date a number of my vintage lenses.

    I have three lenses in Betax No. 4 shutters. I know you list 1921 as the date Wollensak introduced the Betax shutter,

    Any idea when Wollensak stopped manufacturing the Betax?

    Thanks, Scott

  2. #32

    Join Date
    Dec 2013
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    Re: New Resource for Wollensak Lenses and Shutters

    Hi Scott,

    Based on the available catalogs and price lists, it looks fairly certain that Wollensak discontinued production of the Betax #4 in favor of the new Alphax #4 in 1948. If you remove the rear cell from your lenses in Betax shutters, do you see a date penciled or scratched into the diaphragm assembly? This is the only place I consistently find specific Wollensak production dates.

  3. #33

    Re: New Resource for Wollensak Lenses and Shutters

    You were right, a date was scratched into diaphragm assembly of: E 12 46

    I have no idea what the letter E is for, but 12 46 it reasonable to guess at December 1946 for the shutter date.

    That was very helpful information. Thank you.

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