Model Focal Length APERTURE MOUNT FORMAT ANGLE AVS-20CS028 2.8 1.4 CS 1/3 96 AVS-20CS04 4 1.2 CS 1/3 76 AVS-20CS06 6 1.2 CS 1/3 53 AVS-20CS12 8 1.2 CS 1/3 42 AVS-20CS16 12 1.2 CS 1/3 28.2 AVS-20CS 16 1.6 CS 1/3 17