lens question

Discussion in '35mm Cameras and Accessories' started by Nikon Collector, Sep 17, 2013.

  1. Nikon Collector

    Nikon Collector Member

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    I have a series E 50/1.8 that doesnt stay wide open for metering, if I take it off the body I can move the little lever on the back and it works like it should except that if I'm not careful it depresses into the lens body. I think this is what happens on the camera. It's a junk lens, big cleaning mark on front element, that I use as a body cap on bodies that I'm not using at the moment and probably not worth repairing. just wanted to know if there is something that I can do to fix it. I'm mechanicaly inclined but dont have the proper tools or any idea of the inner workings of the lens
     
  2. John Koehrer

    John Koehrer Subscriber

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    It's not hard to poke around in. Three crosspoint screws in the mount & you can see the stop down mechanism.
    Your thought about the lever pressing into the lens has a lot of merit. If I recall correctly the lever you're referring to is attached to the inside of the lens mount.
    When reassembling, the stop down lever slips into a notched ring around the diaphragm and that's the only timing or alignment you need to be aware of.
     
  3. Nikon Collector

    Nikon Collector Member

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    Thanks John, It's a junk lens so I havent lost anything if I screw it up, maybe something has come misaligned?
     
  4. Tom1956

    Tom1956 Inactive

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    Just gotten old and dirty.
     
  5. Nikon Collector

    Nikon Collector Member

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    Like me!! :smile:
     
  6. Xmas

    Xmas Member

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    Hi

    you need to know that Nikon built most of its lenses to tolerate a vibration table and the three screws you need to unto were covered in an adhesive and then screwed in

    they need a screw driver that is a good fit and the screw heads locally heated (e.g. with a soldering iron) first to soften the glue

    good luck

    you can get good series E 5cm on the cheaper cams and throw away the cam