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  1. B

    Help identify marks in ED82 lens tube ?

    Mayoayo would be correct if the photo is of the tube, not optical surfaces. I was thinking this was an optical surface, but maybe not. P.S. You did say in the original post 'lens tube', so I suppose it is the inside of the tube. I have seen fungus on the inside of tubes, but it is then usually...
  2. B

    Help identify marks in ED82 lens tube ?

    Yes Mark, Nitrogen purged binoculars and scopes are routinely refilled. Nikon and East Coast Optical Repairs come to mind. But it may cost, say £100, more or less. Some firms. like Zeiss do not like cleaning fungus. At least with lenses. On the other hand Zeiss completely overhauled an old...
  3. B

    Help identify marks in ED82 lens tube ?

    Hi Mark, The photos aren't sufficiently clear. The right arrow mark points to some possible surface contamination. Not classic fungus, but there are many types. It could be something that worsens, but if the scope is many years old it may take a long time to get bad. I cannot see anything at the...
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