The Tiffen Black Diffusion F/X 1/2 Filter is a high-quality soft focus filter. The Black Diffusion F/X creates a flattering image even in tight close-ups without sacrificing image clarity. This is an extremely advanced diffuser from Tiffen because it creates a diffused image that doesn't look like it's been shot through a filter. The filter produces a soft, smooth texture - perfect for portraiture. Tiffen, a leader in the filter industry, proudly makes its filters in the USA. Note! Black Diffusion F/X filters are available in grades from 1/4-5 with grade 5 having the greatest effect