An 82mm ND16 filter reduces light and allows for smooth water effects. Purchased in 2017, but rarely used. There are no noticeable scratches on the filter surface. Includes case: Almost no scratches or dirt. Body: No scratches. Dust removed as much as possible with a blower. The following is quoted from the official website: PRO1D ND coating emphasizes flat transmission characteristics. The PRO1D ND filter series employs PRO1D ND coating, which emphasizes flat transmission characteristics. It is a thin-frame type that supports wide-angle to telephoto lenses. It is a neutral gray filter with extremely high neutrality and excellent color reproduction. It is used when you want to adjust only the amount of light without affecting the colors. The outer circumference is ink-coated to reduce internal reflections, preventing flare and ghosting caused by the filter. It features a knurled (non-slip) filter frame for ease of attachment and removal. ND16 reduces the amount of light to 1/16, which is equivalent to 4 f-stops. It is ideal for expressing waterfalls and streams with slow shutter speeds, or when you want to open the aperture and blur the background in sunny weather.