Wide angle adaptor for Century 6mm lens to become 4.5mm T1.9
Arri Std or PL Mount, Covers Super 16, with Wide Angle Shade
Use Cooke 35mm S4 lenses with SK4 wide angle, designed for Super16.
138mm W/A Shade, 9.5mm to 5.6mm, 12 to 6.6mm and 10-100 T2 to 6mm