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Message: <blockquote data-quote="baj" data-source="post: 1804987" data-attributes="member: 56301">I just bought a pair of mid-priced binoculars ($500-ish) online and was surprised to see several lines in the objective lenses that look kind of like very fine scratches or marks in the coatings.  I saw them the first time I looked at the objectives under normal room lighting (not some kind of super-critical examination) but from some angles they are not readily visible.The seal on the box had been broken already so presumably somebody had returned this pair, so my first thought was that the first purchaser had tried to clean them or something and had scratched them.  But upon closer inspection with a flashlight I am certain that the marks are not on the outer surface of the lenses.  Each lens has a mark about .5 - .75 inches long, and one of the lenses has two much smaller marks as well.Shining the flashlight into the binoculars I can see what looks like piece of dust or a similar mark on one of the prism surfaces but that's about it.  I know dust is bad but I don't know if a complete lack of dust is realistic (this is my first pair of waterproof/sealed binoculars), but this is only one piece and I'm a lot less concerned about this than the objectives.Is this kind of thing normal and to be expected, or should I return these binoculars?  Thanks very much for any advice.</blockquote>