Function: Reduces the amount of light reaching the film without affecting the color. • Applies slow shutter speed under strong sunlight exposure. • Allows wider apertures, effectively decreasing depth of field. • ND2 reduces the intensity by one degree; ND4 reduces two, and ND8 three • Notice • When using the ND filter to the Maximum density,It will appear obvious "X" spot a blur in the picture. • This is a normal optical phenomenon. • Solution:To Gradually lower the density value and reduce the aperture,until the facula disappeared Material: Optical Glass Back thread diameter (attach to lens) Color:black |