he Schneider 4x4" Black Frost 1/2 Water White Glass Filter flares highlights, mutes colors, and tones down contrast, while retaining rich blacks. This is a very useful combination of effects for 16mm and 35mm film, as well...

Used Schneider Optics 0.9 ND filter in the 4x4 100mm format. A 0.9 neutral density cuts three stops of light, giving cinematographers and photographers control over exposure and depth of field in bright conditions...