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Yeah, according to the article, their first commercial lens with flourite was delivered in 1969.
by ubercore 3y ago
Yeah, according to the article, their first commercial lens with flourite was delivered in 1969.
- throwaway81523 3y agoI thought there was at one time an issue with the fluorite elements in those huge many-kilobuck lenses absorbing moisture from the air and cracking or having other sorts of failures. Canon for a while stayed with fluorite while Nikon worked out ED glass that avoided the problem. I don't know if today's Canon L lenses use fluorite.