Specially designed 0.42X 37mmHD Fisheye Lens with Macro High resolution professional series. Multi coated optics lens system. Lifetime international guarantee. It fits right over your camera's existing lens system and affects the full zoom range of your camera's lens. A wide-angle converter more than double your angle of view, allowing you to get twice as much in the picture, include more of the landscape, include more people in group picture, and interiors show more of the room. Your telephoto setting also becomes wider, this converter brings everything closer.