Image size: 1/1.8inch Focal length: 12mm Aperture: 1.8mm Field of View: D: 42°H: 33.6°V: 25.5° Distortion: -1.8% Total Optical Length: 18.9 mm Back Focal Length: 6.7mm Flange Back Length: 6.23mm Thread Size: M12 x P0.5 Optical Structure: 10G+IR IR Cut Coating: Tave