Thread: Is this a Flourite?
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Old 18-02-2022, 11:15 PM
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MortonH
Deprived of starlight

MortonH is offline 		 
Join Date: Nov 2006
Location: Sydney
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The only Vixen 80mm fluorite I'm aware of was f/8 while their achromats were around f/11. This one is f/9 so it's a mystery. Does its performance give any clues to its glass type?
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