Hikvision camera lens, TV0550D-MPIR, Auto Iris, Vari-focal 3M Megapixels IR Lens, CCTV Camera Lens, Standard Lens Features: 5-50 mm focus CS Interface Lens iris aperture F1.6-C Sensor 6.5mm(3/4″) 102g Recommended distance within 150 meters Specifications: TV0550D-MPIR Lens Parameters Focal Length: 5-50mm Aperture Range: F1.7-C Lens Mount: CS Format: Φ6.5mm(1/2.7″) Horizontal Angle of View: 1/3″ :49.6°~5.5°1/4″ :40.0°~4.5° Min.Working Distance: 0.3m Iris Control: DC Weight: 102g Dimension: Φ43*76.7mm