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Thread: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

  1. #21

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    Re: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

    It's also nearly impossible that a lens made in the US in 1900 would have anything on it that would have metric measurements, so going at it from that angle is certainly doomed from the start.
    Thanks, but I'd rather just watch:
    Large format: http://flickr.com/michaeldarnton
    Mostly 35mm: http://flickr.com/mdarnton
    You want digital, color, etc?: http://www.flickr.com/photos/stradofear

  2. #22

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    Re: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

    Quote Originally Posted by mdarnton View Post
    It's also nearly impossible that a lens made in the US in 1900 would have anything on it that would have metric measurements, so going at it from that angle is certainly doomed from the start.
    Well, the back section of the lens screws perfectly on the macro tube for my Japanese metric Canon so I had good hopes.

    Quote Originally Posted by cowanw View Post
    https://www.cameraeccentric.com/stat...llensak_12.pdf
    Now you know why a lens sans flange is cheaper than with flange, eh!
    Yes, I understand why now. lol

    Anyways, the lens is still sitting tight on the board and there is no light leak so I'm not going to woory about it. Thank you all for your help.

  3. #23
    Ron (Netherlands)'s Avatar
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    Re: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

    Quote Originally Posted by cowanw View Post
    https://www.cameraeccentric.com/stat...llensak_12.pdf
    The Automatic shutter is on page 9
    ....
    According to the info on page 15, the OP with his 8x10 lens, has the biggest of the 5 sizes in which the Automatic shutter was made. Someone here might have a comparable shutter and is able to measure the thread pitch.

    Quote Originally Posted by cowanw View Post
    The pitch of the lens is very important and may well not be standard, .....
    The Betax 4 and 5 shutters had the (less common?) pitch of 30 - which can be found as NS thread pitch: https://www.largeformatphotography.i...1&d=1596660474

    Btw the title of this thread should ideally also mention the shutter since it bears the thread.
    Last edited by Ron (Netherlands); 5-Aug-2021 at 15:20.
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  4. #24

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    Re: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

    Btw the title of this thread should ideally also mention the shutter since it bears the thread.
    Good idea, I added "automatic" in the title, thank you.

  5. #25
    Mark Sawyer's Avatar
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    Re: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

    Quote Originally Posted by T.Chabry View Post
    Well, the back section of the lens screws perfectly on the macro tube for my Japanese metric Canon so I had good hopes...
    Then you might try getting a step-down ring of that size. Make it a big step and you'll have room to put some screws through it to attach it to the lens board.
    "I love my Verito lens, but I always have to sharpen everything in Photoshop..."

  6. #26

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    Re: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

    The flange I have is already screwed on the lens board and the shutter is screwed half a turn and tight on the flange so I'm not worried about it.
    Knowing what is needed would be good if another user has the same problem as me but I think I am all set with my lens setup.

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