Tiffen 4 x 4" Black Diffusion/FX 1/4 Filter dovetail plate There is an approximate 4x

There is an approximate 4x filter factor with this filter

Offering greater tonal separation than regular yellow and orange contrast filters

to slide a laptop computer

and backed by Tiffen’s ColorCore Technology - Academy & Emmy Award Winning Gear

2" / 4 mm Thick

Tiffen 4 x 4" Black Diffusion/FX 1/4 Filter dovetail plate There is an approximate 4xTiffen Black Diffusion FX Overview The Tiffen 4 x 4" Black Diffusion FX 1 4 Filter diffuses strong light entering the lens and produces a glowing effect. While the resulting image appears softer and ethereal, there is little loss of clarity or detail. This filter works by diffusing the light entering the lens with small aberrations; by spreading the light more evenly, a soft glow is created rather than the sharp, well defined image when shooting