The model HD-5050PRO Super Wideangle conversion lens is designed to broaden the angle of view including 100 percent more area in the picture when attached to the lens of Digital Video Camcorder. Its compatible with the whole zoom area and stays in focus.The HD-5050PRO is made of the high-index optical glass elements with new concept of lens designing using three-group/four-element lens formula. This new concept in designing the lens made it possible to achieve an amazing high definition wideangle lens of the 600 lines/mm resolution power at center.High-Resolution 600-Line/mm3-group/4-element High Definition designCompatible with whole zoom area62mm front filter size