The Benro Master Glass Filter 150x170mm Soft-Edged GND4 (0.6) is a high-quality graduated neutral density filter designed for professional photography applications. This rectangular filter features a soft-edged gradient that creates smooth, natural transitions between filtered and unfiltered areas—ideal for landscape and architectural photography, where balanced exposure is crucial. The GND4 designation corresponds to a density of 0.6, which equates to a light reduction of 2 stops, allowing photographers to effectively control high-contrast scenes. Made from premium optical glass, the filter measures 150 mm in height and 170 mm in width, with precisely constructed soft edges for seamless transitions in images. The advanced NANO WMC coating technology provides exceptional scratch resistance and repels water and oil, making cleaning and maintenance easier. ULCA multi-coating significantly reduces stray light and chromatic aberration, with an average light transmission of over 99.0% in the wavelength range of 420-680 nm, ensuring minimal color shift and maximum image quality. An additional IR CUT coating effectively reduces infrared pollution, which is particularly important for digital sensor photography. The soft-edge design makes this filter especially suitable for scenes with gradual transitions between light and dark areas, such as skies at horizons or interiors with window lighting. The size 150x170 mm fits various filter systems and lens configurations in professional photography setups. This filter maintains color neutrality and optical clarity while providing precise exposure control, making it an essential tool for photographers in challenging lighting situations where preserving detail in highlights and shadows is critical.