Ideal for shooting situations in which zooming is not needed. The .6X attaches to the front of your video zoom lens for 40% wider angle of view and minimal distortion. It allows partial zooming up to mid-range while in Auto Focus (loses focus beyond 6X). The resulting focal length is 2.7 - 16.2mm with increased horizontal angle of view. Uses Century's popular Bayonet Mount that attaches with a twist to the front of your lens. For use with the Sony HVR-Z1U and HDR-FX1.