Features 1.LARGE APERTURE: The lens is equipped with a large aperture of F1.6, in darker environments, can effectively improve the shutter speed, and the image is still bright. 2.12 APERTURE BLADES: Camera lens has up to 12 aperture blades to produce near round diffuse spots. Proper reduction of the aperture can produce a 14 star light effect. 3.C MOUNT: Standard C mount lens flange distance is short, can be used with a variety of mount camera body adapter ring (adapter ring is not included). 4.MC MULTI LAYER COATING: MC multi layer coating is used in backlight environment to reduce glare and purple edge, improve lens finish and light transmission, and improve image quality. 5.DURABLE AND PORTABLE: 35mm F1.6 lens is made of alloy and premium optical glass to improve reliability and durability. Small size, does not take up space and is easier to carry. specificationItem Type: Camera Lens Material: Metal, Glass Focus Length: Approx. 35mm/1.4in Maximum Aperture: F1.6 Minimum Aperture: F16 Mounting: C Port Lens Type: Pure Manual Lens Nearest Focusing Distance: Approx. 0.3m/0.98ft Maximum Focusing Distance: Infinity Viewing Angle: 18 Structure: 4 Groups of 4 Pieces Coating: MC Multi Layer Blade: 12 Pieces Filter: Diameter Approx. 37mm/1.5in PackageList1 x CameraLens