The model HD-7000PRO high definition Wideangle conversion lens is made of the high index optical glass elements with new concept of lens designing using three-group/three-element lens formula. This new concept in designing the lens made it possible to achieve an amazing high definition wideangle lens of 540 lines/mm resolution power at center (MTF 30%). It"s compatible with whole zoom area and stays in focus. There will be no reduction of light value when this conversion lens is attached on the camera"s lens. Adapter rings for other filter sizes for use with HD-7000PRO are available as well. Remote control function and internal video light/Flash may not work properly with conversion lens attached. All of Raynox conversion lenses are proudly made in Japan. At Raynox"s wholly owned manufacturing subsidiary, every stage of production is rigorously checked and tested so that the lens elements compensate effectively for astigmatism, distortion and spherical aberration.... for an excellent image quality.