Features 1,High Definition: 10MP high definition manual iris lens, with 35mm focal length, not easy distortion, pictures. 2,Adjustable Aperture: Camera lens with manual focus and adjustable aperture, also can be fixed and locked, no lens shading, no dark corners. 3, Material: C mount lens is made of aluminium alloy material, high temperature resistant, rustproof and durable. 4,Compact Size: The size of industrial camera lens is approx. 40.0x55.0mm or 1.57x2.17in, lightweight and easy to carry, and filter size is M37.5x0.5p. 5,Easy Installation: Prime lens is easy to install, no complicated operation is required, convenient for using, save your time and energy. Specification Item Type: C Mount Lens Material: Aluminium Alloy Model: CW 3514 10MP A Focal Length: 35mm Image Format: 1in(16mm or 0.63in, 12.8x9.6mm or 0.5x0.38in) Relative Aperture: 1:1.4 Mount: C Mount Field Angle: 1in 20.9°x15.8° 2 or 3in 14.4°x10.8° 1 or 1.8in 11.8°x8.8° 1 or 2in 10.5°x7.9° Back Focal Length: 17.53mm Iris: Manual or Lock Zoom: - Distortion: 0.03 percent Resolution: 10 Mega Pixel M.O.D: Approx. 0.30m or 11.81in Size: Approx. 40.0x55.0mm or 1.57x2.17in Filter Size: M37.5x0.5p Package List 1 x C Mount Lens1 x Adaptor Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.