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Thread: What's these bubble-like substance inside the lens

  1. #1

    Join Date
    Sep 2003
    Posts
    115

    What's these bubble-like substance inside the lens

    Please someone tell me what's these bubble-looking dots as seen inside this glass? Thanks.

    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=15247&item=3808744261&rd=1

  2. #2

    Join Date
    Mar 2002
    Location
    Knoxville, Tennessee
    Posts
    1,789

    What's these bubble-like substance inside the lens

    Aaron,

    Appears to be an excellent case of "Schneideritis", the bubbling or flaking of the black coating inside the lens cells common to Schneider lenses. I have one Schneider lens with Schneideritis, but not nearly so prominent as this one. Most people say it does not affect anything but resale value.

    Steve

  3. #3

    Join Date
    Dec 1999
    Location
    Forest Grove, Ore.
    Posts
    4,675

    What's these bubble-like substance inside the lens

    I have some Schneider lenses with this ailment. I've heard that Scheider claims it doesn't affect image quality.

    But, one wonders.

    I should think that it could result in internal reflections, which will ultimately raise flare levels. The one to which you point is a fairly extreme case. I have a lens with a moderate amount of the problem, and it's taken some excellent images.

  4. #4

    Join Date
    Sep 2003
    Posts
    115

    What's these bubble-like substance inside the lens

    Thanks for responding. Appreciate it.

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