Haida ND1.8 64X Square Optical Glass Neutral Density Filter 83x95mm High Quality Square 83x95mm Optical Glass Neutral Density Filter ND 1.8 64X Haida Neutral Density filters are constructed from high quality optical glass for increased optical clarity and color fidelity Eliminates overly bright, washed-out images. Balances exposures Equally effective in color or black and white photography and does not affect the overall coloration of the image. Fits to Haida 83 Square Filter Holder ( Model No:HD2137 ) and Hood ( Model No.:HD2139 ) Includes Filter Case