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Thread: Lens coating damage

  1. #1

    Join Date
    Oct 2000
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    214

    Lens coating damage

    Is a damaged coating on a lens still better than no coating at all?

  2. #2

    Join Date
    Dec 2000
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    Tonopah, Nevada, USA
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    6,334

    Lens coating damage

    YES. The way I understand from what I've read assuming the glass surfaces are good whatever the gain from the coating will only be lost in a percentage equal to the amount of the surface damaged. So if the coating is 10% damaged you're down 10% in whatever the gain from the coating was. Overall percent can be very low. People who obsess over perfection are suffering from a far greater % loss than a little coating damage. But that will never change.

  3. #3
    Mark Sawyer's Avatar
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    Jul 2004
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    Stuck inside of Tucson with the Neverland Blues again...
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    6,268

    Lens coating damage

    What Jim said, and it's a wonderful thing! I've bought a couple of great lenses quite cheaply because they had very minor flaws (maybe 0.001%) in the coating only. Could never have afforded them otherwise...
    "I love my Verito lens, but I always have to sharpen everything in Photoshop..."

  4. #4

    Join Date
    Dec 2001
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    San Joaquin Valley, California
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    9,599

    Lens coating damage

    What Jim said....and don't used vodka to clean your lens when out in the field, even if its the only thing handy!;-)
    "I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority"---EB White

  5. #5

    Lens coating damage

    Geez, I'd think vodka would be pretty good for lens cleaning. Seriously. 20-40% ethanol in water? I'd think that would work pretty well. Except, of course, that there may be far better uses for it than removing crud...

  6. #6

    Join Date
    Apr 2000
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    711

    Lens coating damage

    But what about sour mash?

  7. #7

    Lens coating damage

    Actually, I think Everclear is what you want for lens cleaning. The "better uses" issue remains however.

  8. #8

    Join Date
    Oct 2000
    Posts
    214

    Lens coating damage

    Thanks, I enjoyed the answers! This isn`t one of those things where I`m obsessed with a little damage. I have a lens that some bonehead left their permanent fingerprint covering the entire inside of the rear of the front cell. I was thinking of removing the coating entirely if that would improve things. If somes better than none, so be it...

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