Schneider Optics 4×4 Black Frost, Warm Black Frost, White Frost Filters 1/8-2\rNOTE: Choose your type from the dropdown menu\r4x4 Black Frost Filters These filters flare highlights, mute colors, and tone down contrast, while retaining rich blacks. This is a very useful combination of effects for 16mm and 35mm film, as well as for HD and standard video. These are primarily styling, or mood modifying filters. Depending on the grade chosen, they subtly enhance a scene without degrading the image quality or black saturation. Black Frost enables cinematographers to capture blacker blacks than are possible with similar types of filters. Black Frost filters are made using a remarkable, new diffusion technology, to achieve a unique image styling that can be applied freely, without fear of having scenes appear “heavy-handed.” Black Frost filters contain thousands of MicroPore particles, which introduce precise amounts of light diffraction while controlling stray light and flare. They are the result of proprietary Schneider design and manufacturing techniques that refine and calibrate the embedded diffusion particles in ways that have not been used before in filter manufacturing. Black Frost filters provide an array of precisely sized particles that control the degree of diffusion in a predictable and repeatable manner. By solving the problems of excessive light scatter and veiling glare associated with similar filters, Schneider Black Frost filters make possible a higher level of control and convenience. As with all Schneider Optical Glass filters, Black Frost filters can be used in front of long lenses, singly, or in combination with any other Schneider filters, to make combinations that provide an even greater range of control. Schneider Black Frost filters are available in 4″ x 5.650″ (Panavision Size) and 6.6″ x 6.6\