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Thread: Help on the space ring size of Gundlach Series B lens.

  1. #1

    Join Date
    Apr 2012
    Location
    Australia
    Posts
    102

    Help on the space ring size of Gundlach Series B lens.

    I recently picked up a Gundlach Series B No.5 portrait lens which is a 14" f4 Petzval type lens.
    After unscrewing the rear lens cell for cleaning, I found the spacer ring between the two elements is missing.
    Could anyone who has the same lens measure the height and thickness of the spacer ring?

    Thanks a lot.

  2. #2

    Join Date
    May 2015
    Location
    SooooCal/LA USA
    Posts
    2,077

    Re: Help on the space ring size of Gundlach Series B lens.

    They sit close, but since a portrait lens not critical as these are not ment for critical sharpness, so anything for some airspace is ok... Thin o-ring, paper/cardstock, whatever you find around...

    Steve K

  3. #3

    Join Date
    Apr 2012
    Location
    Australia
    Posts
    102

    Re: Help on the space ring size of Gundlach Series B lens.

    Thank you, Steve, I will start from 2mm with cardboard paper

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