Fixed Iris Lens, with CS Mount and 16mm Focus Focus: 16mm Aperture: 1.6f Mount: CS Format: 1/3-inch Fixed Iris Lens, with CS Mount and 16mm FocusKey Specifications/Special Features:Focus: 16mm Aperture: 1.6f Mount: CS Format: 1/3-inch Viewing angel (HOR): 17.1° MOD: 0.1m Weight: 47g Fixed Iris Lens, with CS Mount and 16mm Focus