- Variable filter for specific reduction of the amount of light\n- Suitable for lenses/zoom lenses with a filter thread\n- For digital/analogue photo, system and video cameras\n- Is also a UV filter\n- Rotary mount for individual adjustment\n- Possibility to lengthen the exposure time between +1 and +8 (ND2-400) aperture stops\n- Coating: one layer on each side\n- Quality standard (glass): high-quality lens glass