Description: This is a 2.8-12mm F1.4 varifocal auto IRIS lens. Suitable for cameras with either a 1/3“ or a 1/4“ sensor. As replacement part for secure camera system. With fine workmanship and professional-grade material, it features good hand feeling, excellent work performance, excellent for long-term use. With high definition image, good color reduction and small distortion, It provides wide and clear for your vidicon. Specification: Optical Glass Lens Day and Night, Infrared (IR) Auto-Iris Lens Vari-Focal 2.8-12mm Aperture F/1.4 Image Format 1/3 inch Angel of View 90°~29° Mount Type:CS Mount Minimum Object Distance 0.3 m Iris:Auto Focus: Manual Zoom: Manual Package Includes: 1 Piece 2.8-12mm Auto Iris Lens Description: This is a 2.8-12mm F1.4 varifocal auto IRIS lens Suitable for cameras with either a 1/3“ or a 1/4“ sensor As replacement part for secure camera system With fine workmanship and professional-grade material, it features good hand feeling, excellent work performance, excellent for long-term use