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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
ED Glass?
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<blockquote data-quote="Buffalobob" data-source="post: 202122" data-attributes="member: 8"><p>A couple of points. As Cam says ED glass is chiefly a color issue and if you are looking for a reddish brown elk in brown grass at a mile or more then you better have it or some of the newer stuff.</p><p></p><p>ED has a few disadvantages but usually if a lens is made out of ED then there will be other "improvements" associated with it. ED has a different refractive index and so the whole (?- or at least part) lens system must be redesigned. Not all "ED" glass is actually real ED. This is like buying a 1967 GTO and finding out that the serial number belongs to a dam LeMans.</p><p></p><p>Bottom line is ED is for secondary chromatic aberration- blurring/fuzzy transition of colors.</p><p></p><p>I know I didn't answer your question and you wish you had a brick handy, but there is just no way of knowing without actually looking through the scope.</p></blockquote><p></p>
[QUOTE="Buffalobob, post: 202122, member: 8"] A couple of points. As Cam says ED glass is chiefly a color issue and if you are looking for a reddish brown elk in brown grass at a mile or more then you better have it or some of the newer stuff. ED has a few disadvantages but usually if a lens is made out of ED then there will be other "improvements" associated with it. ED has a different refractive index and so the whole (?- or at least part) lens system must be redesigned. Not all "ED" glass is actually real ED. This is like buying a 1967 GTO and finding out that the serial number belongs to a dam LeMans. Bottom line is ED is for secondary chromatic aberration- blurring/fuzzy transition of colors. I know I didn't answer your question and you wish you had a brick handy, but there is just no way of knowing without actually looking through the scope. [/QUOTE]
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ED Glass?
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