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Congrats on your TEC180FL. I think you'll find as I have there is a reason why Fluorite has endured as the premium lens material all these years. Just think of all those high end Canon sports lenses with fluorite elements. I believe Canon is still using fluorite in the really long telephotos the sports photographers use.
That bit of light that other glasses scatter gets through with fluorite. Sometimes if the exposure level is long enough it will show up fine faint aspects missed in other images. Nothing major but there is a subtle pick up that it will achieve.
Greg.
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