Polaroid 100 lens fungus

Discussion in 'Camera Building, Repairs & Modification' started by rshaw, Jan 18, 2012.

  1. rshaw

    rshaw Member

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    I have a Polaroid Auto 100 that has a little fungus on the front of the rear element. It looks as though I can remove the rear element by removing 4 screws in the lens mount which would hopefully allow access to the front side of the rear element to deal with the fungus.

    Is this the correct procedure to remove the rear element, and will removing the rear element mess up the focus of the lens package?
     
  2. ic-racer

    ic-racer Member

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    Yes that should give you access to most of the surfaces. However, they have the elements kind of permanently held in place, so I just cleaned the two outermost surfaces and these two inner surfaces. (Polaroid 250 in picture)
    [​IMG]
     
  3. ic-racer

    ic-racer Member

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    If your 100 has the bright light/dim light indicator plate on top like the 250, realize that the shop manual calls for tearing that off and replacing it with a new one every time the front of the shutter is opened up. If you are careful you can get it to peel away from one side only like in the picture and preserve it.
     
  4. BrianL

    BrianL Member

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    Considering the going prices for these, why bother ripping into it, even. I see these for free all over the place. You can go upscale with a 2xx, 3xx or, 4xx.
     
  5. rshaw

    rshaw Member

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    Many thanks for the responses.
    If I am interpreting the ic-racer's photo correctly, the four screws seem to hold the entire front lens board assembly onto the rear part of the lens board and the bellows. I was hoping that the raised area around the screws came off by itself, and let the rear lens element drop out. Not the case, however. See my photo from the inside of camera with the film pack removed, below. Under the circumstances I think I will just live with a few small fungus spots. I have not noticed any effect on the photos, anyway.

    So far I've not found any free pack film Polaroids, but I suppose there are folks out there that just want to get rid of them. The local Craigslist currently has a 100 for $40 and a 360 for $100 asking price.

    rear lens 300dpi.jpg