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Thread: screw sticking out on my 210 symmar

  1. #1
    Armentor1
    Join Date
    Mar 2011
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    New Orleans, La
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    64

    screw sticking out on my 210 symmar

    I just purchased a 210 symmar 5.6 on ebay. The glass is very clean and the shutter fires accurately. I am currently trying to mount it on a temporary, copal 1 lens board but there is a screw that is poking out from underneath the mounting ring on the back side of the front element (see image).

    This screw is not allowing me to put the lens board on flush. It is designed not go down any further. Is this supposed to be here? Should I modify the lens board to have a negative space to accommodate the strangely placed screw?


    dave

  2. #2

    Join Date
    Feb 2008
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    The Highlands of Scotland
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    195

    Re: screw sticking out on my 210 symmar

    The screw you are describing is the "location" screw and is used to ensure that the lens is mounted in the right orientation when used with a lens board that has a small notch taken out of the mounting hole.

    Most of us remove the screw so that it'll fit into a normal lensboard.

    Mike

  3. #3
    Octogenarian
    Join Date
    Sep 2003
    Location
    Frisco, Texas
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    3,529

    Re: screw sticking out on my 210 symmar

    It's an index pin, an optional part of the shutter.

    Use a small jeweler's screw driver to unscrew and remove it.

    Removing it will not effect the operation of the shutter.

  4. #4
    Armentor1
    Join Date
    Mar 2011
    Location
    New Orleans, La
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    64

    Re: screw sticking out on my 210 symmar

    thanks for the speedy responses guys. I'll just take it out.

  5. #5

    Join Date
    Feb 2006
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    3,114

    Re: screw sticking out on my 210 symmar

    Quote Originally Posted by armentor1@mac.com View Post
    I just purchased a 210 symmar 5.6 on ebay. The glass is very clean and the shutter fires accurately. I am currently trying to mount it on a temporary, copal 1 lens board but there is a screw that is poking out from underneath the mounting ring on the back side of the front element (see image).

    This screw is not allowing me to put the lens board on flush. It is designed not go down any further. Is this supposed to be here? Should I modify the lens board to have a negative space to accommodate the strangely placed screw?


    dave
    Negative space????? No, just put a notch in it.
    One man's Mede is another man's Persian.

  6. #6

    Join Date
    Sep 2003
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    God's Country
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    2,077

    Re: screw sticking out on my 210 symmar

    I agree with E.

    Once notched, ensure that the pin sits into the notch and this will prevent your lens from rotating around on the board. That's what the pin is meant for.

    Cheers
    Life in the fast lane!

  7. #7
    Octogenarian
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    Sep 2003
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    3,529

    Re: screw sticking out on my 210 symmar

    If the retaining ring is tightened properly, there is little, or no,danger of the shutter rotating.

    What if you want to change the orientation of the shutter on the lens board in the future and the notch is not in the proper position? Cut another notch?

    No need to deface a perfectly good lens board.

  8. #8

    Join Date
    Jun 2005
    Posts
    2,480

    Re: screw sticking out on my 210 symmar

    Quote Originally Posted by armentor1@mac.com View Post
    ...
    Should I modify the lens board to have a negative space to accommodate the strangely placed screw?

    dave
    If you decide to take away the screw make sure it doesn't become a negative screw - keep it. I used to attach it with an electrical tape on the lens rear element. Never lost it...

  9. #9

    Join Date
    Jul 1999
    Location
    Paris suburbs, France
    Posts
    124

    Re: screw sticking out on my 210 symmar

    Here is a photograph of a Nikon lensboard in the Technika-style wearing a notch to accomodate that kind of screw (red arrow). You will notice that the notch doesn't pass through the board to keep it light-tight.
    It's safe to withdraw the screw as explained above.
    D.C.

  10. #10

    Join Date
    Jun 2002
    Posts
    9,472

    Re: screw sticking out on my 210 symmar

    It's nice to have the lens "keyed" like that if you possibly can, but it's not worth sweating over. Most of the time if you have a lens wrench, you can tighten the retaining ring firmly and the lens/shutter will not rotate in use.

    Some wooden lensboards that shrink and swell may be a different story. Why people still try to make precision cameras out of wood is pretty silly....

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