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Thread: Which shutter-speed is park-position when not in use?

  1. #1
    3D-Stereo-Aeropanoramas
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    Which shutter-speed is park-position when not in use?

    Which shutter-speed is park-position when not in use?
    Thanks
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    3DStereo-Aeropanorama-Jungfraujoch

  2. #2
    jim_jm's Avatar
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    Jan 2013
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    Re: Which shutter-speed is park-position when not in use?

    I keep mine on T or B when not in use.

  3. #3

    Join Date
    Oct 2015
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    799

    Re: Which shutter-speed is park-position when not in use?

    I've used Copal, Compur, Seiko, and Ilex shutters for 40 years and I've always left 'em on whatever speed was last used. Not saying this is right, but I've never had any issues with my shutters. I do leave 'em uncocked when not in use.

  4. #4

    Join Date
    Sep 1998
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    Re: Which shutter-speed is park-position when not in use?

    Quote Originally Posted by Alan9940 View Post
    I've used Copal, Compur, Seiko, and Ilex shutters for 40 years and I've always left 'em on whatever speed was last used. Not saying this is right, but I've never had any issues with my shutters. I do leave 'em uncocked when not in use.
    New Rodenstock lenses are set at t.

  5. #5

    Join Date
    Nov 2019
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    11

    Re: Which shutter-speed is park-position when not in use?

    Hello,
    In terms of storage shutter speed doesn't mean a thing. I can only advise to avoid storing your shutter cocked, especially at highest spring tension (usually 1/500 or 1/400). In older Compur-style shutters (Compur, Synchro-Compur, Moment, Seikosha, etc) there is an aditional spring which is engaged at the shortest speed. These springs actually tend to deteriorate over long periods of time.
    Best regards,
    Alex.

  6. #6
    Andy Eads
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    Jul 2001
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    Pasco, Washington - the dry side of the state
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    233

    Re: Which shutter-speed is park-position when not in use?

    I bought a new copal #1 and it arrived set at T. I believe the theory is you do not want to leave any spring under tension for extended periods lest they become weak. Perhaps modern materials are not so prone. So, as advised above, don't ever leave a shutter cocked and leave it set on T when stored for any length of time.

  7. #7
    Mark Sawyer's Avatar
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    Stuck inside of Tucson with the Eastern Seaboard Blues again...
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    Re: Which shutter-speed is park-position when not in use?

    The lowest tension on the spring is at "T" or "B", uncocked. I prefer "T", ready for focusing.
    "I love my Verito lens, but I always have to sharpen everything in Photoshop..."

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