The Tiffen Warm Black Diffusion/FX 1 4 x 5.65" filter diffuses strong light entering the lens and produces a luminous effect. Although the resulting image appears softer and more ethereal, there is little loss of clarity or detail.

This filter works by diffusing light entering the lens with small aberrations; by distributing light more evenly, a soft glow is created rather than a sharp, well-defined image when shooting without a filter. In addition to the diffusion provided, a warming effect is also built into the filter, helping to further balance skin tones. Density 1 offers more softening than 1/2, but less than 2.

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 143.5mm.

The diffusion filter imparts an ethereal quality to photographs, creating a dreamlike atmosphere.

The soft image quality does not compromise overall image detail.

Light entering the lens is diffused by small aberrations, creating a soft glow rather than a sharp, well-defined image when shooting without a filter.

The additional warmth provided adds more luminous effect and helps to further balance skin tones.