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Thread: Lens/shutter stuck in lens board

  1. #11
    8x10, 5x7, 4x5, et al Leigh's Avatar
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    Re: Lens/shutter stuck in lens board

    Before you do anything else, open the aperture blades all the way and engage the preview lever
    to open the shutter blades. This avoids damaging them if something slips.

    Do NOT use screwdrivers or a caliper on the retaining ring. Only use a proper spanner.

    Do NOT use a strap wrench. It can damage the shutter.

    Grasp the shutter firmly with your right hand and turn it counter-clockwise.
    It sounds as though someone has used some thread locking agent.

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

  2. #12
    Jim Jones's Avatar
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    Re: Lens/shutter stuck in lens board

    Some shutters have a screw protruding from the back that engages a blind hole in the lens board. In this case, the shutter cannot be rotated to free it from the board without risking damage to the shutter. For a makeshift lens spanner I've clamped two nails in a vise with the proper spacing and filed them down to engage the slots in the retaining ring. The nails shouldn't protrude further than necessary. The whole lens board is then rotated in relation to the vise.

  3. #13
    8x10, 5x7, 4x5, et al Leigh's Avatar
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    Re: Lens/shutter stuck in lens board

    Quote Originally Posted by Jim Jones View Post
    Some shutters have a screw protruding from the back that engages a blind hole in the lens board. In this case, the shutter cannot be rotated to free it from the board without risking damage to the shutter.
    True that.

    The anti-rotation pin is used specifically to prevent rotation of the shutter. I should have mentioned it.

    Ironic, since I insist on using it whenever I mount a shutter smaller than a #3, which doesn't use it.

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

  4. #14

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    Re: Lens/shutter stuck in lens board

    Thank you all for your suggestions. I too believe there is a little screw protruding from the shutter. So I guess I'll have to order myself a spanner. And just the other day I thought to myself "now I can't possible need anymore gear for my largeformat cameras". There's allways something missing, I guess

  5. #15
    Ron Miller
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    CT, USA
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    Re: Lens/shutter stuck in lens board

    Stick the board in a ziplock, put it in the freezer for 20 minutes and try it.

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