Neutral Density filter evenly reduce the amount of light passing through the lens without effecting color. Ideal for reducing bright light in large aperture situations when a narrow depth is field is needed. Neutral Density Filters are often used to achieve motion blur effects with slow shutter speeds High Quality Optical Glass 10 stop Neutral Density Filter ND 3.0 1000X Increases control of depth of field Eliminates overly bright, washed-out images. Balances exposures Equally effective in color or black and white photography Includes Filter Case Made of optical glass same as Schott (same glass found in B&W & Heliopan filters). Neutral Density filter evenly reduce the amount of light passing through the lens without effecting color. Ideal for reducing bright light in large aperture situations when a narrow depth is field is needed. Neutral Density Filters are often used to achieve motion blur effects with slow shutter speeds High Quality Square 100x100mm Optical Glass Neutral Density Filter ND 3.0 1000X 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. Compatible and comparable with Lee System (Big Stopper). - Optical Glass for best image quality and more scratch resistant than resin types (Hitech, Tianya). - Minimal color cast - Even when stacking 2 Haida filters. - Fits Lee 100mm & Cokin P(83mm) & Cokin Z (100mm) filters holders (not provided). - Self Adhesive Gaskets provided to help reduce light leak issues. - Comes with a cleaning cloth 2 gaskets and plastic box. SPECIFICATIONS: Filter Size: 100mm x 100mm. Filter Density: ND3.0 (1000x). fStop Reduction: 10 (approx). Optical Material: Optical Glass. Frame Material: Aluminium.