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  1. #1

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    Is this separation or fungus or ..?

    Hello,

    this is view of the rear element on the Pentax 33-55/4.5 Is this separation or fungus? The owner says it is not on the outer surface. What do you think?

    Any idea how costly it could be to have this lens element exchanged/serviced?

    thank you
    Attached Thumbnails Attached Thumbnails rear_element_33-55_small.jpg  

  2. #2

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    It looks like fungus to me, personally I would leave it alone, gettimg anything done would certainly be costly and pentax standard zooms are plentyfull and reasonably priced,Richard

  3. #3
    brucemuir's Avatar
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    Yep looks like fungus to me.
    I'd pass considering you probably can't get to the inner element surfaces too easily.
    In my experience this stuff cleans up fairly easily if you can unscrew the elements.

  4. #4

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    There's a fungus among us.
    Unscrew the rear element & carefully wipe it clean.
    Heavily sedated for your protection.

  5. #5
    MartinCrabtree's Avatar
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    Ah that far too easy to be right.

  6. #6
    Sirius Glass's Avatar
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    As one toe said to another, when they had athlete's feet, "There is a fungus among-us!"

    Forget the lens and move on.

    Steve
    Warning!! Handling a Hasselblad can be harmful to your financial well being!

    Nothing beats a great piece of glass!

    I leave the digital work for the urologists and proctologists.

  7. #7
    Slixtiesix's Avatar
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    Looks like fungus. I wouldn┤t buy it.

  8. #8

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    Thank you for your answers. Actually - the rear element can be replaced (should be around $150 including the work). So I am still considering it. However - what makes me unsure is what is the chance that the fungus attacked also deeper sitting elements ...

  9. #9

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    As some said: leave it by the owner - even as a gift I wouldn't take it...

  10. #10

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    Quote Originally Posted by slnce-z-gsi View Post
    Thank you for your answers. Actually - the rear element can be replaced (should be around $150 including the work). So I am still considering it. However - what makes me unsure is what is the chance that the fungus attacked also deeper sitting elements ...
    You can't guess at the chance of that happening.
    It may, or may not. You'll never know unless you have the thing and keep an eye out for it, see if it does or not.

    Just like it may to lenses that as far as we know haven't been affected, yet. You never know. All we can do is store the things sensibly, and hope.

    Already having fungus in a lens may increase our expectation that its spores could have reached other parts of it then the ones we know affected by fungus already. But know that they have, and that they will develop into a fungal growth if they have, we do not.

    So if the price is right, and you can get the lens cleaned, worth a gamble.

    On the other hand, if it is going to cost to clean it, and there are other lenses you could get, why bother?

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