Delicately capture flare. The most effective filter effect can be discovered when capturing light that diffuses softly when backlit. It creates a transparent light that looks like it was taken with a high-class old lens. The Ni. Si Black Mist makes searching for light fun.Nano coating. Ni. Si’s Nano coating on each glass surface results in an improved beading effect when in contact with water for greater cleaning efficiency. Brass Frame. Constructed with a high-quality brass frame for enhancing durability and jamming prevention.This filter is constructed from optical glass and grades of 1/8, and 1/4 are also available. This filter type’s effect becomes approximately twice as strong with each grade number increase.