- Adjustable filter for the targeted reduction of light\n- Lighting extension between +1 and +8 (ND2-400) aperture values possible\n- Rotary mount for individual adjustment\n- Coating: one layer on each side\n- Quality class (glass): high-quality lens glass\n- Allows large aperture openings, e.g. for portrait and outdoor shots in extreme brightness: Background noise causes the person being photographed to stand out significantly against the foreground\n- Running water is portrayed as soft by long exposure times\n- In very dark conditions, creates an impressionistic image