FL-BC1618-9M Product Specifications Resolution 9 Mega-pixel *1 Format size 1" format Focal length 16mm Maximum aperture ratio 1:1.8 Iris range 1.8～16 Mount C Horizontal angle of view 1/3" format 17.1° 1/2" format 22.7° 1/1.8" format 25.4° 2/3" format 30.8° 1" format 43.8° Minimum object distance 0.08m Back focal length 14.1mm Filter size 40.5 P=0.5mm Dimensions φ42mmx64mm Weight 153g Remarks Focus & Iris lock screws *1 The lens is also suitable to 4 megapixel and 6 megapixel cameras.