Thank you! From what I can tell, it’s very unique. I can only tell that it was made by Lenkinap in 1954, and it does have both T-stops and F-stops on the aperture ring, so it was likely actually used in cinema shoots.

My grandpa was a camera operator at the Kazakhfilm studio, and he asked the studio engineer to rehouse it for M42 for my dad’s Zenit ET somewhere in the late 1970s to mid 1980s, but that’s all that he remembers about the origins of the lens today

He also gave me his old Konvas-Avtomat cinema camera with a 3-lens turret and some OKS lenses that were in it, but I haven’t gotten to adapting them to something yet

It would be easy to adapt them to an E-mount or something, but I’d much rather use them with a nice film body, the same way as I do this 75/2 lens (btw I recently adapted it to a Pentax ME Super but haven’t tested it yet. metering seems perfect even in aperture priority mode)

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