Tiffen 4 x 4" Black Diffusion/FX 1 Filter Variable Controls depth-of-field

Controls depth-of-field

5mm independent leg adjustments Directional compass set in tripod base Bubble level for accurate positioning

You will notice the blacks turn out true with no color cast from the red end of the spectrum

If a traditional polarizer doesn't give you enough "zip"

Tiffen 4 x 4" Black Diffusion/FX 1 Filter Variable Controls depth-of-fieldTiffen Black Diffusion FX Overview The Tiffen 4 x 4" Black Diffusion FX 1 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 without