CCTV lens, focal length 2.7 to 13 mm, CS-mount, 1/2.7″ optical format, aperture range 1.4 to 360, iris type: Auto P-IrisUsing special lenses and advanced optical design technologies, Tamron has achieved up to 5-Mega-Pixel image quality across the entire frame, whether in the visible (color mode) or infrared (black and white) light ranges.