Does anyone out there have any knowledge about the old early 1960's Arri Standard mount lens filter size?
I have a whole bunch that I've acquired over the years, Schneiders, Zeiss' and they all seem to have a 49.5mm filter thread.
49.5mm is not a standard size today so I'm trying to figure what they were intended for?
Old Tiifen drop in filters?
Does anyone have any thoughts on how to adapt 49.5mm up to a modern standard size?
My lens' have found a new lease of life on my Pocket cinema camera but they really need some ND.
Old Arri S Mount Filter Thread
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