China Universal Clip Mobile Phone Camera 8X Zoom Lens Optical Telescope Lens for All Smart Phone

8x telephoto lens:The 8x zoom lens can clearly see the man and the object in 300 meter.A telephoto lens is a specific type of a long-focus lens in which the physical length of the lens is shorter than the focal length. This is achieved by incorporating a special lens group known as a that extends the light path to create a long-focus lens in a much shorter overall design. The angle of view and other effects of long-focus lenses arethe same for telephoto lenses of the same specified focal length.