The PRO1D ND filter series, which emphasizes flat transmission characteristics, employs the PRO1D ND coating. This thin-frame type is compatible with a wide range of lenses, from wide-angle to telephoto. These filters are neutral gray with extremely high neutrality and excellent color reproduction. They are 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. The filter frame features knurling (non-slip) for ease of handling during attachment and removal. The ND8 reduces the amount of light to 1/8, which is equivalent to a 3-stop reduction. It is useful when you want to express the flow of water in a slower manner. - Model Name: PRO ND-8 (W) - Filter Diameter: 72mm - Made in JAPAN Thank you for viewing.