Xit XT1458F Elite Series 0.14X Xtreme super high definition fisheye auxiliary lens is an essential tool for extreme sports and dramatic action shooters. It is meant to be used with 52mm & 58mm front thread (filter size), lenses. It features multi-coated, high quality glass. It also has a detachable macro lens for high resolution close-ups. It comes with a protective lens case and front and back lens caps. Limited lifetime warranty.