Computar Model T3Z0312CS-MPIR is a 3 Megapixel DC Auto Iris varifocal designed for megapixel cameras. The Computar TG3Z0312FCS-MPIR is ideal for use with megapixel cameras and is IR Corrected for True Day/Night operation. The Computar TG3Z0312FCS-MPIR lens incorporates FULL HD (16:9) design providing a larger image circle for clarity and exceptional brightness in the corners and throughout the image plane. The Computar TG3Z0312FCS-MPIR includes locking screws on zoom and focus rings. COMPUTAR's TG3Z0312FCS-MPIR Precision all glass optics ensure minimal distortion. Used on a 1/3" format camera, the Computar TG3Z0312FCS-MPIR lens provides a 90.7 – 35.2 degree horizontal field of view. 3 year warranty. Recommended for use with 1/3” Format Megapixel Cameras.