CF12ZA-1S Technical Specifications: Product Line / Series CF-ZA-1S Lens Type Fixed Focal Length IP Rating Not Specified Focal Length 12 mm ƒ/N ƒ/1.8 - ƒ/16 Image Size Not Specified Image Circle Diameter Not Specified Imager Format 1.1″ Light Spectrum Visible Resolution (MP) 12-23 Resolution (Pixel Size) 2.74 μm Weight 180 Grams Mount C-Mount Filter Thread M37.5-0.5 Minimum Object Distance 100 mm Front Diameter 39 mm Focus Control Manual Iris Control Manual Flange Back in Air 17.526 mm Exit Pupil Position -93.66 mm Entrance Pupil Position -51.00 mm TV Distortion (%) -2.82 Operating Temperature Range -10 to +50°C Dimensions 39 mm × 39 mm × 67.6 mm Angle of View @ 2/3″ 62.5° x 47.8° Back Focal Length 21.90 mm Chief Ray Angle 4.53° Front Principle Point -40.46 mm Rear Principle Point 5.16 mm Distance Between Principle Points 45.62 mm