Kenko 82S PRO-ND500 82mm filter. I'm selling it because I haven't been using it much. I've heard about potential product switching, so I'm sorry, but returns are not accepted. It is stored in a Marumi Koki filter case "Handy Pochette." Please be aware of this. Please also note that there may be scratches on the lens case. The following is an excerpt from the product description: The PRO ND series is a neutral density (ND) filter manufactured by applying a special coating using vacuum deposition technology. It reduces only the amount of light without affecting the color of the subject. ND500 reduces the amount of light to 1/500, equivalent to a 9-stop reduction. Using a high-density ND filter allows for slow shutter speeds, enabling the intentional addition of motion blur effects. This can soften the flow of a stream to look like silk, or effectively express the speed and dynamism of moving subjects. In video shooting, it also allows you to open the aperture in sunny weather to blur the background. * Motion blur is intentionally creating blur in moving subjects through long exposure.