M Joel W Posted September 20, 2020 Share Posted September 20, 2020 Hi everyone, another one of these weird questions from me. I'm looking for step up rings for vintage Schneider Cine-Xenon lenses. So far, the 75mm f2 seems to have 40.5mm front threads I think, and I have successfully gotten a step up ring for that. I'm looking to step up to 82mm, and the 18mm Cinegon seems to already be 82mm. But for the 28mm, 35mm, and 50mm I have tried I cannot figure out what filter threads to use. They look like 49mm and that's consistent with other lenses from that era, but the 49mm step up rings are a bit loose. Is it some other weird Series filter (series 6.5?) or is it 50mm? I have seen 50mm step up rings but they're rare. I want to use screw on NDs. I appreciate any help. Thanks. Quote Link to comment Share on other sites More sharing options...
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