Tiffen 4 x 5.65" Black Pearlescent Diffusion Filter (1/2,1/4,1/8 Step)

The 4 x 5.65" Black Pearlescent Filter from Tiffen is a diffusion filter that can be applied to soften contrast and reduce image sharpness, resulting in a more flattering subject rendering by reducing the appearance of blemishes and softening highlights. This is particularly suitable for digital cinematography, as high-resolution cameras may be unforgiving. Additionally, it creates a slightly reduced pearlescent halo around highlights, which can further enhance a subject's appearance or produce a desired effect; note that this effect is less pronounced than the halo effect of a white pearlescent filter.

Black pearlescent filters are available in diffusion grades of 1/16, 1/8, 1/4, 1/2, 1, 2, 3, and 4 steps, where each filter's effect becomes approximately twice as pronounced with each grade increase.

This filter is made using ColorCore technology, a process that involves laminating the filter substrate between two pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch.