The Tamron 13VG2812ASII-SQ 2.8-12mm f/1.4 Vari-Focal CCTV Lens is a high-quality lens designed for CCTV cameras. With a maximum aperture of f/1.4 and auto focus capabilities, this lens allows for clear and sharp images. The CS-mount and 1/3" format make it compatible with a wide range of cameras, while the A-mount allows for easy installation. Ideal for security cameras, this lens offers versatility and reliability in a compact design.