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Message: <blockquote data-quote="ronh" data-source="post: 1930663" data-attributes="member: 55514">Dingbat, FWIW, I have heard of binoculars whose insides were carefully covered with grease, to catch any dust and particulates that might be disloged by use, so the grease certainly isn't going to hurt anything. As far as the particulates on the prism faces, my 12x50 BN looks quite similar. I still bet it's scrapings from focus motion abrasion. Our forum resident Leica tech Gary was mum on the issue, but by now Leica has laid him off, in order to streamline their English organization, and that's a bummer. The particulates are such a microscopically tiny fraction of the prism area, certainly they would make no optical difference. I'm not about to take corrective action on my Trinovid, it's so good, nobody with a screwdriver is getting close to it! But the fact that you have some examples where there are no specks shows it doesn't have to be. I just wonder if they could get it right at will, even if you sent it back. Let us know how it comes out if you do take action.RonBob, Bob, You are just being silly. We worry about these things ONLY FOR the birds' sake. Some have very sharp eyesight, you know. They can see gnats easily, for example, and these specks are roughly as large as, well, a gnit on a gnat, which a bird must could see, because I suppose they can actually compare and critically judge gnats, and only eat the best ones, not just barely make them out. They are gnatophiles, not just gnatonomes. In an intense backlit situation, which I'm sure you must have encountered, these photographs show exactly what such a bird sees, inside the binocular, if it is only 7 ft away, where these binoculars might well come to focus. What DO you want it to think?Ron</blockquote>

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