This is a K&F variable ND filter. Please note that vignetting may occur when attached to wide-angle lenses with a focal length of 24mm or less. ※This K&F ND filter is different from the high-quality ND2-32 and ND8-128 types that cost over 7000 yen, and is a model that is more likely to produce unevenness in the X-ray. Please purchase with this in mind※ The following are the manufacturer's specifications: ・【NANO-B Series Variable ND】Variable ND filters have a double structure, so if the variable ND filter is 58mm, the lens cap will be 62mm. ・【Neutral Density Filter】ND filters can reduce the amount of light and suppress overexposure when shooting during the day. Because it is variable, you can adjust the amount of light from ND2 to ND400. It is very convenient because you don't need to have a large number of filters. You can achieve stream-like water flow and light flow, and it can be used in various scenes such as streams, the sea, and waterfalls. The 8-layer coating effectively reduces reflections and ghosting on the filter surface, protecting the filter from scratches. ・【Notes】When the amount of light reduction exceeds a certain point (when adjusted to ND400) (near MAX), cross-shaped unevenness or a bluish tint may occur. This is normal, so please be aware of this. If you continue to rotate the filter, the shadow will naturally disappear. This phenomenon is not a quality issue, but a natural physical phenomenon caused by the rotation of the variable ND. ・The color balance will shift slightly towards the orange side when in use. Please adjust the white balance when shooting. ・Please use the filter between MIN and MAX on the side of the filter. Using it in other areas may result in a loss of image quality and color balance. The product is unused, having only been temporarily attached once. It has been stored in a dehumidified storage cabinet.