The Raynox HD-7049 PRO is a wide-angle attachment lens with very high resolving power. The three individual lenses are made of optical glass, so the impressive resolution of 540 lines/mm in the center (MTF 30%) is achieved. This attachment lens can be used over the entire zoom range of the main lens. When used, the light intensity of the camcorder lens is maintained, there is no loss of light.Features: -Mounting thread: 49 mm -82 mm front thread for filters -Useable over the entire zoom range of the lens -High resolution of 540 lines/mm -Design with 3 individually standing lenses -Clear, crisp images at any zoom position -Imaging factor: Nominal 0.7x; actual diagonal 0.7x, horizontal 0.7x.