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2x C-Mount Extender Lens - Best Scientific
Pixco Lens Kit 35mm F1.7 CCTV Lens for C Mount Camera + 16mm C Mount Film Lens to Micro Four Thirds 4/3 Camera Lens Adapter Camera Lens Adapter (35mm F1.7 for C+C-M43):
Scarce Century 16mm Reflex Focuser Pellicle Finder Cine Camera C Mount Macro | eBay
Fixed focus lenses | STEMMER IMAGING
SELC1635G Sony Cinema Lens | Sony United Kingdom
Gear Review: the Leica Summicron-C Series of Lenses