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Thread: Copal 3 sizes ?

  1. #1

    Join Date
    Oct 2003
    Location
    White Lake, Ontario.
    Posts
    345

    Copal 3 sizes ?

    I have a 360mm Apo Ronar in Copal 3 and I was going to use the shutter to mount a 355 G-Claron (barrel) I also have. In trying to fit the two, I quickly realised that this Copal 3 is too small for the G-Claron! My other Copal 3s do fit the G-Claron perfectly as they have a larger opening.
    And there I was, thinking Copal 3s all had the same opening! Wrong!

    How many different sizes Copal 3s are there anyway? And, can the one I have be modified to accept the G-Claron?

    Thanks

  2. #2
    Robert A. Zeichner's Avatar
    Join Date
    Feb 1999
    Location
    Southfield, Michigan
    Posts
    1,129

    Copal 3 sizes ?

    There are two different types of Copal 3 shutters, the 3 and the 3S. I believe the 3S has a 56mm opening and the 3 has a 58mm. The 3S is a thinner shutter for situations where the front an rear cells need to be closer together. The complete set of specs for all the Copal shutters is on the SK Grimes web site.

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