The NiSi Professional Black Mist Kit creates that cinematic look and is commonly used to soften wrinkles, blemishes and create a flattering image of a subject. It lowers contrast and highlights within the frame are diffused, helping to balance the tonal range among highlights and shadows.
Black Mist Circular Filters have strengths ranging from 1/8 to 1/2 stop – with 1/2 being the strongest effect. The filter effect becomes approximately twice as strong with each grade number increase.
If you have not used mist filters before, a good starting point for still photography is 1/4 and 1/8 for filming.