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Thread: Copal #3 shutters, two sizes?

  1. #1

    Copal #3 shutters, two sizes?

    According to the B&H website, the Copal #3 shutter comes in two sizes, the 3-585 (M62-0.75 mount thread; fits 65mm lensboard hole) and the slightly smaller 3-567 (M61-0.75 mount thread; fits 64.1mm lensboard hole).

    My question is, how do you tell them apart? I do not have examples of both (SFAIK) in my physical possession to compare. I'm not even sure which of the two types are on the Copal #3 lenses that I own.

    Is there a marking on the shutter? From the B&H specs it's obvious that careful measurements would distinguish the two. But I'm trying to determine the size of a shutter that I can only see in a picture.

    Any help will be much appreciated.

  2. #2

    Join Date
    Sep 2003
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    Re: Copal #3 shutters, two sizes?

    3 versus 3s?

  3. #3

    Re: Copal #3 shutters, two sizes?

    Thanks. Now that I enlarge the B&H pic for the 3-567 (and put on my reading glasses) I see the "3 S" on the front face of the housing.

  4. #4

    Join Date
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    Scarsdale, NY
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    Re: Copal #3 shutters, two sizes?

    Quote Originally Posted by Nicholas F. Jones View Post
    My question is, how do you tell them apart? I do not have examples of both (SFAIK) in my physical possession to compare. I'm not even sure which of the two types are on the Copal #3 lenses that I own.
    Nick:

    IDK if the faceplate is a definitive indicator, but an older, silver-faced shutter I have, marked "Copal 3", conforms to the Copal 3S specs. A newer one, marked "Copal 3S", is black-faced.

    The Copal 3 and 3S shutters have different lens thread sizes. See SKGrimes' table.


    Charley

  5. #5

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    May 2006
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    Re: Copal #3 shutters, two sizes?

    Here're all three together:

  6. #6

    Join Date
    Feb 2007
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    Re: Copal #3 shutters, two sizes?

    Yep, it's true Copal 3 shutters have been made in two slightly different sizes, in addition to the Copal 3s, which is different from the 2 versions of Copal 3.

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