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  1. #1

    Join Date
    Jun 2011
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    Where to find an aperture ball detent?

    I have a Minolta 55/1.7 that needs a ball detent for the aperture, no idea why it doesn't have one now as I got it second hand. Anyone know where I can find one? I'm thinking about sacrificing my Kiron 28-70mm for the cause, assuming it uses the same size ball.

  2. #2
    ic-racer's Avatar
    Join Date
    Feb 2007
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    Midwest USA
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    http://www.bocabearings.com/bearing-types/balls

    Link points to Boca Bearing "Ball" ordering page. They have what you want, but the quantities are too much. Maybe they will send a single 'sample' ball.

  3. #3

    Join Date
    Mar 2005
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    Microtools.com You want a 0.5 size.

  4. #4

    Join Date
    Jun 2011
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    Thanks guys, I ordered a bunch of balls to try. Funny story about this though, today I was working on a different lens. Of course instead of the ball flying out, the aperture SPRING popped out. While on my knees and looking for the spring, I found a ball in the carpet fibers...who wants to bet this is the missing aperture ball :P Of course, now I am missing a spring and I can't find it.

  5. #5
    Simplicius's Avatar
    Join Date
    Feb 2008
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    Dublin Ireland
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    Quote Originally Posted by altim View Post
    Thanks guys, I ordered a bunch of balls to try. Funny story about this though, today I was working on a different lens. Of course instead of the ball flying out, the aperture SPRING popped out. While on my knees and looking for the spring, I found a ball in the carpet fibers...who wants to bet this is the missing aperture ball :P Of course, now I am missing a spring and I can't find it.
    This is the very reason I do all my camera tweaking inside my largest darkroom tray.. too many hours wasted on my hands and knees looking for springs etc I just put a couple of phone directories on one side of tray where I am sitting to avoid my arms resting on the tray's lip all the time.. and make it comfortable
    Simplicius

    "defying gravity since 1898"

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