12mm F/1.8Iris: ManualMount: C1/3" Angle of View 22.4° x 16.6° 1/2" Angle of View 30.0° x 22.4° 2/3" Angle of View 40.9°x 30.9° Effective Diameter (Front/Rear Lens) Ø11.7mm/Ø8.0mm Minimum Object Distance 10.2 in. (0.26m) Back Focus 11.03mm (in air) Filter Size M25.5 P=0.5 Maximum Diameter ø1.1 in. (ø29mm) Overall Length 1.1 in. (27mm) Weight 1.4 oz. (40 grams)