This 52mm soft filter provides a softening effect. According to the manufacturer's description, This soft effect filter produces a beautiful soft effect with light diffusion. It can be used with lenses from ultra-wide-angle to super-telephoto, without any aperture limitations. It is also utilized in astrophotography, such as for star field photography and starry sky photography. This is the weaker effect version of the "Pro Softon" that is compatible with wide-angle to telephoto lenses. It is ideal for those who aim for a subtle effect or for telephoto lenses where soft effects tend to become too strong. Although it has been opened, it has been stored unused. The filter is free of scuffs and scratches. - Brand: Kenko - Model Name: PRO1D Pro Softon [A](W) - Filter Diameter: 52mm - Type: Soft Filter