Fujinon HF12.5HA-1B 12.5mm F/1.4 Fixed Focal Lens for 2/3" CCD, C-Mount, Locking Iris/Focus, Industrial and Machine Vision 2/3" 12.5mm F1.4 Manual Iris C-Mount Lens Rated for 1.5 Megapixel Resolution Camera M25.5 x P0.5 Filter Thread Focus Distance: 0.1m to Inifinity