2.5mm CS Mount Fixed Iris 1/2.5" 3MP CCTV Lens for Security CCD Camera Black
1 Piece 2.5mm Fixed Iris 1/2.5" 3MP CCTV Lens. These lenses are factory set for a fixed Iris lens to achieve the optimal field of view. Iris: Fixed. It gives you the widest field of view image available with a CS mount lens.