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Canon 17-40 weird white dots inside front element

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    • JoeClark
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      Post count: 4

      Hello!

      I recently bought a used Canon 17-40L lens and noticed it has some white spots in the front element.
      The spots seem to be in the plastic but don’t affect the image.
      I found this disassembly guide with someone with similar spots on the lens.
      Any information would be appreciated.

      The lens was $340 so it seemed to be a good deal, the lens is in perfect condition and has a UB date code.

      Thanks,

      I didn’t find the right solution from the internet.
      References:
      https://www.dpreview.com/forums/post/60057302

      Medical Device Marketing

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