C-mount lens (compatible with 5-megapixel cameras) manufactured by Kowa (Kowa Optronics). This is a C-mount single-focus lens with a focal length of 12mm and a maximum aperture of F2.8. Model name: LM12JC5MC (Main specifications) Focal length: 12mm Maximum aperture: F2.8 Sensor size: Compatible with 2/3 inch (5-megapixel camera compatible) Mount: C-mount Focus: Manual focus Aperture control: Manual (click type) Minimum shooting distance: 0.2m (Features) Ultra-compact and lightweight design, robust construction with excellent vibration and shock resistance. Thank you for viewing.