The Tiffen Softnet Black 4 4 x 5.65" Filter is a softening filter designed to reproduce the effect of a silk veil placed in front of the lens to soften or diffuse the light. This filter works by dispersing the light entering the lens through a mesh pattern, producing a soft, uniform glow. The black distinction helps to maintain the overall contrast of the scene by reducing the overall light spill into the shadows. Density 4 provides more softening than density 3. Tiffen filters are manufactured using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding it flat to a tolerance of 1/10,000th of an inch. This filter measures 4 x 5.65" / 101.6 x 143.5 mm. - Simulates the effect of a fabric placed in front of the lens to soften the overall image quality. - The black distinction helps to maintain overall contrast and restore density in the darker regions of the image. - The mesh pattern helps to break up the light and smooth fine textures. Specifications