leica leitz

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    Leitz Wetzlar Camera Lens, Binocular Bas-Relief Effect and Eyeglass

    Hello there, I am using old leitz wetzlar camera lenses and binoculars and I see a three dimensional bas relief at the portraits. I asked myself is that because of three dimensional transfer function or colored strange dispersion glass but I could not find an answer. I want an eyeglass with...