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  1. Troubador

    Binomania review of Zeiss Harpia

    Actually I believe some Zeiss microscopes use fluorite crystal lenses and Schott is able to grow these. Lee
  2. Troubador

    Binomania review of Zeiss Harpia

    Many thanks for the overview of Fluorite Piergiovanni! Ciao bello Lee
  3. Troubador

    Binomania review of Zeiss Harpia

    Yes Piergiovanni there are indeed special FL lenses but these are glass doped with fluoride of the same kind as in the original FL binoculars although of a different grade. They are not crystal lenses such as are used by Kowa. Lee
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