Low Distortion IR Corrected 1.8mm M12 LensThe CIL019 is a 1. 8mm F 1. 6 Wide Angle IR Corrected S Mount with Low Distortion. The lens is suitable for up to 5MP 1 2. 7" sensors such as the IMX662. The optical characteristics make this lens ideal for surveillance applications. The barrel is plastic and the lens cannot be ingress protected; filters must also be mounted within the lens holder.