Guest Ron (Netherlands) Posted December 7, 2008 Share #1 Posted December 7, 2008 Advertisement (gone after registration) On my collapsible Summicron there was a separate ring which first I hadn't noticed, but it can be screwed of. It seems to be a FOOXH. It seems to be a sort of extension ring for filters but on the internet I couldn't find any useful info on what it is meant for. Can someone explain? thanks Link to post Share on other sites More sharing options...
Advertisement Posted December 7, 2008 Posted December 7, 2008 Hi Guest Ron (Netherlands), Take a look here FOOXH what?. I'm sure you'll find what you were looking for!
luigi bertolotti Posted December 7, 2008 Share #2 Posted December 7, 2008 It was a simple "filter ring" but without the filter, intended for who had the need of a custom filter: many of such rings were listed, for various lenses, all coded similarly (FOOXB to FOOXK) Link to post Share on other sites More sharing options...
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