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  1. #1
    Paul Green's Avatar
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    zuiko 50mm 1.4 front element disassembly (1.1milliom)

    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. #2
    Paul Green's Avatar
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    http://www.flickr.com/photos/10530789@N04/7227851834/

    Do I have to turn the ring with the 2 notches at 9 and 3?

  3. #3

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

  4. #4
    Mustafa Umut Sarac's Avatar
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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. #5

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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. #6
    Paul Green's Avatar
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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. #7

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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



 

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