Feature:1. 1.8mm Focal Length: The fish eye lens has 1.8mm focal length, 5MP resolution, provide you with high definition picture detail to preent information loss.2. Wide Compatibility: The image format is 1/2.7in, 1/3in and CCD CMOS, can be used in fisheye cameras for CCTV cameras, you can record ideos smoothly to provide clear images.3. Field of View: This lens has a wide view angle, 190, 148, 88 for 1/2.7in and 154, 113, 81.5 for 1/3in, allowing you to see large areas of the picture and control the oerall situation.4. Premium Material: 5MP fisheye lens is made of high quality aluminum alloy material, high sensitivity, high reliability. Let you use it safely and securely.5. Exquisite Manufacturing: Thread size of the camera lens is M12xp0.56g, fixed aperture, professional manufacturing, high performance, good replacement for the old damaged one.Specification:Item Type: Fisheye LensMaterial: Aluminum AlloySensing Area: 1/2.7in, 1/3in and CCD CMOSFocal Length: 1.8mmBack Focal Length: 6.5mmBack Focal Length: 5.98mmF NO.: 2.0+5%.Aperture (Iris): Fixed ApertureField of View:190, 148, 88, for 1/2.7in154, 113, 81.5 for 1/3inResolution: 5MPM.0.D: 0.1mThread Size: M12xP0.5-6g.Package List:1 x LensNote:The optical coating is very important for the imaging of the lens, and it needs to be handled with care to avoid scratching the coating