Large aperture: Large aperture lenses can shoot in low-light environments for better depth of field control and background blurring. This is very helpful for portrait photography and shooting in low light environments. 2 Infrared function: The infrared lens can capture the infrared band that the human eye can not see, and can shoot a unique infrared effect. This is useful in artistic creation and some special application scenarios. 3 Night vision: Infrared lenses can also shoot in dark environments, often used in surveillance, field exploration and other scenes. It can supplement the lack of vision of the human eye. 4 Privacy protection: In some occasions with privacy requirements, infrared lenses can avoid visible light and shoot, which plays a certain role in privacy protection. 5 High-end image quality: Large aperture infrared lenses usually use high-end optical design and manufacturing processes to ensure image quality, including sharpness, color reproduction, etc F/NO 1.4 SENSOR 1/2.5 EFL 8 FOV 50D