The model DCR-2025PRO high definition telephoto lens is made of high index optical glass elements, and it's designed with new designing concept of two-group/four-element formula to obtain the maximum resolution power of 260 lines/mm resolution power at center (MTF30%), while it has low dispersion.There will be no reduction of light value (F.Number) when this conversion lens is attached on the camera's lens.By using a suitable adapter and/or holder, the DCR-2025PRO lens can be used with the appropriate digital still camera or digital camcorder, effectively.DCR-2025PRO comes with 4-adapter rings for 43mm/ 52mm/ 55mm/ 58mm filter sizes and a LS-082 lens shade.