Technical Specifications:Parameter• Image format 1/1.8”• Focal length 4-18mm• Aperture F1.6• Field Angle 137°(D)x110°(H) x82°(V) ~31°(D) x25°(H)x 19°(V)• M.O.D. 0.3m• Distortion -57.5%~-2.7%• IR Correction YesLens Control• Focus Manual• Zoom Manual• Iris DC-Iris• Mount C• Dimension Ų49×81.1mm• Weight 218g• Operating temperature -20?~+60?