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Thread: Fungi : Sunbathing lens cell ?

  1. #1

    Join Date
    Apr 2013
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    Fungi : Sunbathing lens cell ?

    Hello All,
    Looking forward to using this WA Hermagis .
    Both lens cells have 1 very tiny flake of translucid fungus towards the middle, shaped like the leaves of horse chestnut trees...
    They are stuck in between the crown&flint of each cell. Can't clean them.
    I am not sure if they have grown up since I purchased the lens, but I occasionally placed the cells under the sun for a "kino" session...
    I am not even sure they could affect seriously any picture, I may see that shortly.
    But meanwhile and for my curiosity :
    The lens gets burning hot if placed under the sun, so I am reducing its strength/session time : could it damage the lens otherwise?
    Not sure if this lens is worth having the cell separated/cleaned/re-cemented, but who would do this for me?
    Same as per all my oter lenses, I hope this one will be still at work for long after I disapear and I feel I should take a good care of it.
    Thanks for any comment & advise.
    Ralph, NYC.
    Attached Thumbnails Attached Thumbnails HERMAGYS - MATTIOLI .jpg  

  2. #2
    ic-racer's Avatar
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    Feb 2007
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    Re: Fungi : Sunbathing lens cell ?

    I'd just wipe it off.

  3. #3
    loujon
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    Re: Fungi : Sunbathing lens cell ?

    Sounds more like balsam separation then a fungus problem. I know it looks like fungus but I'd bet its glue failure. This is both good new and bad the good news is it more then likely won't get much worse in your lifetime. The bad news is the only way to get rid of it is to remove the cells, separate & clean the old glue off then glue the cells back together again.

  4. #4

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    Apr 2013
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    Re: Fungi : Sunbathing lens cell ?

    Thanks Louis,
    I'll take the good news and will use it like this.
    Might be a good idea to stop the sun baths if it is a problem of glass separation...
    I'll check around and find someone to remove/clean/re-glue them properly only if separations get far worse.

  5. #5
    come to the dark s(l)ide..... Carsten Wolff's Avatar
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    Re: Fungi : Sunbathing lens cell ?

    Quote Originally Posted by Albedo View Post
    Thanks Louis,
    I'll take the good news and will use it like this.
    Might be a good idea to stop the sun baths if it is a problem of glass separation...
    I'll check around and find someone to remove/clean/re-glue them properly only if separations get far worse.
    Esp. since you're in the US, try Focalpoint, or S.K.Grimes, but I'd just use it as-is.
    http://www.jeffbridges.com/perception.html "Whether you think you can, or think you can't, you are right."

  6. #6

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    Apr 2013
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    Re: Fungi : Sunbathing lens cell ?

    Thanks for the tip Carsten :
    I know S.K.Grimes doesn't re-cement lenses any longer, but I never heard about Focal Point.
    It seems it is one of their core services, and I may need it sometimes.

  7. #7

    Join Date
    May 2006
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    102

    Re: Fungi : Sunbathing lens cell ?

    If you have a fungus problem, try putting the lens through multiple passes of a court house metal detector.

    I once gave a lens with some fungus ten or so passes through a metal detector. It was a "slow afternoon", and the Sheriff's Officer was glad to have someone to speak with.
    A few weeks thereafter I saw that the fungus had stopped expanding. In any event, so much for governmental claims that radiation from a metal object scanner does not harm anything.

    If nothing else, give it a try before you resort to more expense cures.

    Flauvius

  8. #8

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    Apr 2013
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    Re: Fungi : Sunbathing lens cell ?

    Thanks for the tip, Flauvius,
    I could try this method, even if NY Court Houses and Gov security teams are probably not always as understanding than others...
    But good idea: Just bringing your old lenses with you everytime you know you have to pass through one of these. As "En route lenses health-care session".
    Also, I know a firm who has a big X-Ray scanner near my job.

  9. #9

    Join Date
    Apr 2013
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    Re: Fungi : Sunbathing lens cell ?

    Hello All,

    I took some pics of it through my wife's iPhone & a crap x8 magnifyer.
    (Sorry, not up to best standard as I had to use my 3rd hand)

    I don't know if it is a fungus...
    It looks like a buble of air, that got squeezed in the cement between the glasses, and that expended as it could before the cement dried,
    it is about a square mm and quite shinny upon light angle.Click image for larger version. 

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    Its rounded borders are neat and don't show any crack of any sorts.

    For the moment I will shoot with the oldie and check its bubles.

    Thanks : I did appreciated your comment and tips!

  10. #10

    Join Date
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    Re: Fungi : Sunbathing lens cell ?

    The edge shows really minimal separation. The jellyfish looks like a spot of separation (some call them snowflakes).

    The spot, though, is not in any way a typical balsam fault. It looks like a spot of separation from an early post-balsam cement. Given the apparent age of the lens, I'd guess somebody in the 1950's recemented it.

    In your position, I'd just take it out and use it. These little spots will have zero effect on the negative.

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