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M12 Mount Lens Holder for CCD CMOS sensor 20mm hole distance
Arducam M12 Lens Kit for Raspberry Pi HQ Camera (Type 1/2.3), 20 to 180 Degrees Telephoto, Wide Angle, Fisheye Lenses with M12 to CS-Mount Adapter, Locking Ring, Cleaning Cloth and More: Amazon.co.uk: