The 1.57mm f/2.0 Fisheye Lens is created for 1/2.5’’ image sensors. A full horizontal image is made when work with a 1/2.5’’ sensor. By offering a 185-degree angle of view, this fisheye create an impression of viewing through a peephole. This fisheye lens is excellent for smart home application such as vedio doorbells. It will be ideal in the role of a door guardian which is about to shield your home with a protective barrier by letting you watch the live preview of you home surroundings. Make sure your home is sage even when you are away.