Item Type: F1.0 LensMaterial: ABSType: Fixed Focal Length LensMinimum Aperture: F1.0Wide Angle: 104 DegreesFocal Length: 4.0mm 5%Optical Back Focus: 3.94mm 0.2Package List1 x F1.0 Lens 13MP HD: F1.0 camera lens is a 4mm 3MP lens that provides HD images with high resolution and displays clear color images without any auxiliary light source in low light levels. 2Compatible: F1.0 lens is highly compatible and can fit most security cameras. Aperture can be fixed and locked, convenient and reliable. 3Universal Fixed Focus: Universal camera lens can objectively record and reflect the speed of object movement, suitable for electron microscope, closed circuit television. 4Easy Installation And Disassembly: Camera lens is easy to install and disassemble without affecting the use of other accessories, very practical. 5Durable: Universal camera lens is made of premium ABS material, which is sturdy and durable, and it can provide you with less noise and less distortion.