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Thread: Filter size and thread pitch for Schneider Xenar 150mm f/3.5

  1. #1

    Filter size and thread pitch for Schneider Xenar 150mm f/3.5

    I have a Schneider Xenar 15cm f/3.5 dated to 1929. I would like to use filters on it and as far as I have been able to determine the filter thread is likely 40.5mm with a 0.5mm pitch. Can anyone confirm this or provide the actual specifications?

    Also, if the pitch is indeed 0.5mm does anyone know a current brand that makes these (as opposed to the common 0.75mm pitch thread)?

    Thanks in advance.


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  2. #2
    (Shrek)
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    Re: Filter size and thread pitch for Schneider Xenar 150mm f/3.5

    I can't answer your question directly. However, 40.5mm filters do exist, and the threads on filters are tapered. A standard filter should screw on by a couple of turns and hold in place, in a pinch. Of course this would marr the threads a little, even if you don't force it the paint would eventually wear off.

  3. #3

    Join Date
    Aug 2018
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    Re: Filter size and thread pitch for Schneider Xenar 150mm f/3.5

    On my 150mm with the text "Xenar f:3,5 F=15cm D.R.P.a. Jos.Schneider & Co Kreuznach No 28xxxx" is a 43.5 to 52mm adapter. This lens covers at least 9x12cm.
    But you might have a different lens....
    Last edited by Oslolens; 17-May-2022 at 06:39. Reason: f:3,5

  4. #4

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    Re: Filter size and thread pitch for Schneider Xenar 150mm f/3.5

    A potential option would be to use a slip-on series filter adapter.

  5. #5

    Re: Filter size and thread pitch for Schneider Xenar 150mm f/3.5

    They used slip-on filters back then, and the thread is usually for the front element retaining ring and not meant for accessories. But sometimes you might be lucky and can use the thread.

  6. #6

    Re: Filter size and thread pitch for Schneider Xenar 150mm f/3.5

    Quote Originally Posted by Oslolens View Post
    On my 150mm with the text "Xenar f:3,5 F=15cm D.R.P.a. Jos.Schneider & Co Kreuznach No 28xxxx" is a 43.5 to 52mm adapter. This lens covers at least 9x12cm.
    But you might have a different lens....
    Thank you. This is helpful. I have the exact same version so I will try this solution.


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