1/1.7" 3.8-18mm 12 Megapixel CCTV Lens Surveillance Security Camera Safe City ITS Industrial Face Recognition IR Day Night C Mount Bank Lenses Brief Introduction High resolution: 12 megapixel cover 4K & 1080P Wide focal length: Covering 3.8-18mm, 3.8-16mm, 4-16mm, 4-12mm Big aperture: F1.5 suitable for dark vision Large format: 1/1.8" can cover all 1/1.8",1/2",1/2.5", 1/2.7" IR correction: Yes Application: All bldg., school, exit, room, metro, highway. Specifications Model: RB-VD3818IR-12ML Resolution: 12.0 Megapixel IR Corrected: IR Format(inch): 1/1.7" Focal Length (mm): 3.8-18mm Aperture (Close): F1.5 DC Iris Angle of View (): 2/3" 1/1.7" 145*110*79 1/2" M.O.D (m): 0.3m Size: 51x82mm Distortion: -28.6% ~ -2.6% Mount: CS Weight (g): 251