... quality,clear image,all-metal lens2.Focal length 2.5mm,1/3 inch,M12*0.5 mount,F2.0 ... aperture board lens3.Popular focal length 2.5mm cctv lens4.CCTV lens/CCTV camera lens/Security cctv ... night cameraSpecification: Model Number ABF-MTV2520B Focal Length(mm) 2.5mm Aperture(F) 2.0 Format(inch) 1/3 Mount ... MTV lens/fisheye lens/mini lens serie:(2.1mm,2.5mm,2.8mm,3.6mm,6mm,8mm,12mm,16mm)Certificate: ...