CAS-1200, a CS-mount vari-focal lens, is a great accessory for any system installer using several boxtype cameras. CAS-1200 has an F-1.4 auto-iris that adjusts automatically to bring flexible light control to box-type cameras, rendering the highest-quality images available. This is useful for deployments using the same cameras installed in several different lighting environments like garages, warehouse loading docks, street monitor, and etc. In addition, IR lens avoids shifts of focus points in both visible and infrared ranges, ensuring clear vision in day and night surveillance.