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50mm Zeiss SF --- When??!
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<blockquote data-quote="maico" data-source="post: 3475225" data-attributes="member: 139687"><p>Calcium fluorite crystal grown for optical use is synthetic. Schott have 80% of the World market and much of it ends up in industries like semi-conductor production.</p><p>Other companies growing it are Hikari Glass Co. owned by Nikon and Canon.</p><p>A detailed article about fluorite can be found here translated from the French.</p><p></p><p></p><p><a href="http://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fwww.pierretoscani.com%2Fecho_cristal.html" target="_blank">http://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http://www.pierretoscani.com/echo_cristal.html</a> </p><p></p><p>Fluorite glass found in binoculars is a glass mix not crystal. </p><p></p><p>It's a shame nobody produces animations like this for binos</p><p></p><p><a href="http://www.pierretoscani.com/images/echo_divers3/Figure-1-01-anim.swf" target="_blank">http://www.pierretoscani.com/images/echo_divers3/Figure-1-01-anim.swf</a></p></blockquote><p></p>
[QUOTE="maico, post: 3475225, member: 139687"] Calcium fluorite crystal grown for optical use is synthetic. Schott have 80% of the World market and much of it ends up in industries like semi-conductor production. Other companies growing it are Hikari Glass Co. owned by Nikon and Canon. A detailed article about fluorite can be found here translated from the French. [url]http://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fwww.pierretoscani.com%2Fecho_cristal.html[/url] Fluorite glass found in binoculars is a glass mix not crystal. It's a shame nobody produces animations like this for binos [url]http://www.pierretoscani.com/images/echo_divers3/Figure-1-01-anim.swf[/url] [/QUOTE]
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50mm Zeiss SF --- When??!
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