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  1. #1

    Join Date
    Dec 2012
    Shooter
    35mm
    Posts
    50

    Olympus Zuiko OM 28mm 2.8 lens – slow aperture blades. Easy fix?

    I have an OM Zuiko 28mm f2.8, which has problems with the aperture blades. When I press the button on the side of the lens (depth of field button?) the blades seem to close slowly. They then stick for a bit, and then slowly open. My other Zuikos 'zip' closed and open instantly.

    Also, when adjusting the aperture dial, the blades seem to half close and then open on their own. The other Zuiko lenses I have, don't move at all when I adjust the aperture.

    I have a great repair person, but it would probably cost me as much to get him to fix this, as it would to buy a decent version online – it's not the most expensive lens in the world.

    So, despite the fact that I have never attempted a camera or lens repair myself... how hard would it be for me to open this lens up and fix this problem? Or am I asking for a world of pain?

    Thanks for any tips, step by step guides, encouragement… or otherwise.
    Last edited by Roundabout; 09-17-2013 at 07:53 AM. Click to view previous post history.

  2. #2

    Join Date
    Oct 2008
    Location
    Ottawa, Canada
    Shooter
    35mm RF
    Posts
    76
    Yeah, easy fix. The mechanism is spring tensioned, and the lever arm very likely has oil on it. If you search the web, you'll find that it is a very normal failure for the age of the lenses.

    To fix it yourself, take the screws off the rear mount. You'll see the mechanism and spring loading. Take the lever and spring off, clean it all up with lighter fluid (naptha) and put it back together. Some suggest leaving it dry; you can also use a tiny amount of shutter oil.

  3. #3

    Join Date
    Oct 2008
    Location
    Ottawa, Canada
    Shooter
    35mm RF
    Posts
    76

  4. #4

    Join Date
    Dec 2012
    Shooter
    35mm
    Posts
    50
    Thanks vysk. Much appreciated.

    I'll have a go at this when I'm more awake.

  5. #5

    Join Date
    Dec 2012
    Shooter
    35mm
    Posts
    50
    Hmmmmm. That YouTube video seems to be a bit wrong. There doesn't seem to be anything wrong with the lens.



 

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