zuiko 50mm 1.4 front element disassembly (1.1milliom)

Discussion in '35mm Cameras and Accessories' started by Paul Green, May 19, 2012.

  1. Paul Green

    Paul Green Member

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    Hi all,

    So I purchased a super cheap 1.1million serial numbered zuiko 50mm 1.4 off of eBay with a sticky aperture. I have disassembled the back half and fixed that as well as cleaned the dusty glass, and put it all back together fine.

    Whilst cleaning I found that the front element has some condensation behind it. I have managed to remove the front facia, bezel and aperture ring, remembering not to lose the ball bearing and spring, but for the life of me I can't work out how to remove the retaining ring that holds the front element(s).

    I have read online that some of the earlier models use 3 sometimes varnished screws which this one doesn't have.

    Any thoughts or experience would help me greatly,
    Cheers guys.
     
  2. Paul Green

    Paul Green Member

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  3. E. von Hoegh

    E. von Hoegh Member

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    I think you need to turn the inner ring which contacts the front glass. Try a sink stopper.
     
  4. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    Paul ,

    To rotate 9/3 ring seems to me only way , I saw that ring at lots of lenses and work for removing glass from the case. You can turn it from one end or with a knife from two end , dont strach the glass or harm yourself.

    Umut
     
  5. aoleg

    aoleg Member

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    I have a similar lens, couldn't remove the front group either. It seems fixed with something like loctite. Most probably, a few drops of a reasonably strong solvent are required to free the threads.
     
  6. Paul Green

    Paul Green Member

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    Thank you all for the replies, I am going to pick a lens spanner up and see if that will do the job, I will keep you updated.
     
  7. John Hermanson

    John Hermanson Member

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    Unscrew spanner ring, remove glass. Often the bubbling or condensation is inside a cemented group, making the lens beyond repair. 3 varnished screws are found ONLY in the last 2 versions of the 50/1.8. John