Haida ND64 100mm Square Optical Glass Neutral Density ND Filter ND1.8 64X 100 Cokin Z Compatible High Quality Square 100x100mm 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 100 Square Filter Holder (Model No:HD2500) and Optional Adapter Ring 49-82mm (Model No.:HD2509) Includes Filter Case & Cloth