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  1. #1
    Kekhotep's Avatar
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    Lens board help - Copal or Mount number?

    Hi,

    I'm looking for a front lens board for my recently won Sinar F2. A guy on ebay has one that says it's for "Copal 0." I look at lenses on keh.com and they say "Copal Bulb" (42 MOUNT). How am I to know if this is compatible?

    Please accept my advanced thank you.

    Darryl

  2. #2
    BradS's Avatar
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    the copal #0 shutter fits in a 35~36mm hole (approx 1-3/8 inch). The copal #1 shutter fits in a 42mm hole (approx 1-5/8 inch). The Syncho-Compur shutters normally fit in the same size hole as Copal#1.

    Make sense?
    Last edited by BradS; 02-14-2009 at 04:45 PM. Click to view previous post history. Reason: add Compur.

  3. #3
    Kekhotep's Avatar
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    Yes. Where did you find this information?

  4. #4
    BradS's Avatar
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    Quote Originally Posted by Kekhotep View Post
    Yes. Where did you find this information?
    Just comes from experience. I bought stuff and measured. I guess you can also kinda infer some of it by looking at lens mfgr's data sheets....see for example, http://www.schneideroptics.com. Look under info->vintage lens data-> large format lenses....one of the specs is usually the size of the hole that shutter fits in.

  5. #5
    ic-racer's Avatar
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  6. #6
    Kekhotep's Avatar
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    Thank you both. So, I figure that I need a Copal 1 for these lenses, 98% of the 210mm lenses say "Mount 42."

  7. #7
    BradS's Avatar
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    yes. practically all 210mm lenses (intended for 4x5) sit in a Copal #1 shutter...or the equivalent.

  8. #8
    Ole
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    Many older 210mm lenses are in Compound #3 shutters, e.g. Xenar 210/4.5 and Angulon 210/6.8. Newer lenses tend to have smaller max apertures, and come in #1 shutters (e.g. 210/6.1 Xenar).
    -- Ole Tjugen, Luddite Elitist
    Norway

  9. #9
    Ian Grant's Avatar
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    Quote Originally Posted by BradS View Post
    the copal #0 shutter fits in a 35~36mm hole (approx 1-3/8 inch). The copal #1 shutter fits in a 42mm hole (approx 1-5/8 inch). The Syncho-Compur shutters normally fit in the same size hole as Copal#1.

    Make sense?
    Brad, the Synchro Compur shutters were made in many sizes I have a 00 and a 0, the Synchro just indicates the flash sync.

    Ian

  10. #10

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    SkGrimes also has good information regarding hole size on their site.
    Heavily sedated for your protection.

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