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Thread: How hard/easy to mount lens in a 'new' Copal shutter

  1. #1

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    How hard/easy to mount lens in a 'new' Copal shutter

    If I have a used lens such as a Schneider Symmar-S in a malfunctioning shutter, and I have a working Copal 0 (same size), is it feasible for me to DIY swap the shutter? How complicated (or simple) is it?
    Wing and a prayer

  2. #2

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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    Very simple, unscrew the front and back cells from the old shutter, be sure to keep any shims.
    Screw the cells into the new shutter replacing any shims from the old shutter.
    If the aperture scales are different on the shutters unscrew the scale from the old shutter and install it on the new one.

  3. #3

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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    Then send the broken one out for repair- they aren't making any new ones.

  4. #4

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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    Thanks Bob. I never thought about the aperture scale and shims. Are the shims circular flat rings?

    Quote Originally Posted by Bob Salomon View Post
    Very simple, unscrew the front and back cells from the old shutter, be sure to keep any shims.
    Screw the cells into the new shutter replacing any shims from the old shutter.
    If the aperture scales are different on the shutters unscrew the scale from the old shutter and install it on the new one.
    Wing and a prayer

  5. #5

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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    Good idea. Who do you use?

    Quote Originally Posted by Mark Sampson View Post
    Then send the broken one out for repair- they aren't making any new ones.
    Wing and a prayer

  6. #6

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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    Quote Originally Posted by pchaplo View Post
    Thanks Bob. I never thought about the aperture scale and shims. Are the shims circular flat rings?
    Yes

  7. #7

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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    Quote Originally Posted by pchaplo View Post
    Good idea. Who do you use?
    Any camera repair place can service a leaf shutter. That is camera repair 101! However, parts are no longer made, so if yours needs parts that arenít available then you would have to find a repair shop that either still has new ones or salvaged ones or can make them.

    Tempe Camera in Phoenix and
    Precision in Austin are two you can try.

  8. #8
    8x10, 5x7, 4x5, et al Leigh's Avatar
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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    One critical point is that shims are NOT all the same thickness.

    Their purpose is to take up the error in the shutter thickness (manufacturing tolerance). One shim or set of shims from one shutter will NOT work with another shutter, even if the same brand. Nor will they work with the same shutter when mounting a different set of lens elements.

    - Leigh
    If you believe you can, or you believe you can't... you're right.

  9. #9

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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    I'll add to get precision calipers and measure the cells back to front in the old shutter, and try the cells again in the new shutter to see if the measurement matches... If the calipers reach, measure front to back on each of the shutters (without cells) to see if they match...

    This is a test...

    Steve K

  10. #10

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    Re: How hard/easy to mount lens in a 'new' Copal shutter

    Quote Originally Posted by Leigh View Post
    One critical point is that shims are NOT all the same thickness.

    Their purpose is to take up the error in the shutter thickness (manufacturing tolerance). One shim or set of shims from one shutter will NOT work with another shutter, even if the same brand. Nor will they work with the same shutter when mounting a different set of lens elements.

    - Leigh
    Because you suppose the shims are made for a specific shutter? I suppose they are rather made for a nominal shutter and for a specific pair of lens cells - much more economical that measuring each shutter individually. Because we don't live (and produce lenses) in an ideal world but in a world of economic constraints.

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