- Variable filter for specific reduction of the amount of light ,- Possibility to lengthen the exposure time between +1 and +8 (ND2-400) aperture stops ,- Rotary mount for individual adjustment ,- Coating: one layer on each side ,- Quality standard (glass): high-quality lens glass , ,Impact on the pictures: ,- Allows large apertures e.g. when shooting portraits when it is extremely bright: due to a blurred background the photographed person is clearly visible in the foreground ,- Due to long exposure times flowing water gets soft ,- Creates an impressionistic flair in poor light conditions , ,Note for Consumers: ,To avoid vignetting, this filter has a superstructure of the front lens, i.e. the diameter of the front lens is larger than that of the rear lens. Please note that a lens cap with 62 mm is thus required. - Front Thread: Yes ,- Coating: Coated ,- Filter Thread: 58 mm ,- Filter Type: Variable Grey Tone ,- Grey Tone: 2x - 400x ,- Metal Mount: Black ,- Mount Thickness: 7 mm ,- Type of Glass: High-Grade Lens Glass 2 years legal warranty only