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Message: <blockquote data-quote="Gijs van Ginkel" data-source="post: 3522645" data-attributes="member: 82596">The Wanderer, post 31,One experiment that shows that an hypothesis is not correct proves that this hypothesis must be reformulated, so there goes my hypotheis, that top producers take utmost care to prevent that any dust or whatever pollutes the lenses and or prisms during the fabrication process of top quality binoculars. Nevertheless. it is very hard to understand when you watch the whole process that something like that can occur. The best thing to do, when you have something like that is to return the instrument to the company and ask for cleaning or a new instrument, since this is not acceptable. I am curious what the cause is of  the small spectacles in the test report you refer to. Any irrregularities in the coating may yield  a similar image.Gijs van Ginkel</blockquote>