The H&Y K-Series Hard GND Filter with Magnetic Frame ND1.2 is a professional 100x150 mm graduated neutral density filter designed for precise exposure control in photography. This hard-edge graduated filter offers a 4-stop density reduction (ND1.2) with a sharp transition line, making it ideal for shots with clear horizon lines, such as landscape and architectural photography. Made from durable Corning Gorilla Glass with advanced vacuum coating, the filter maintains optical clarity and resists breakage during demanding outdoor use. The high-resolution MRC (Multi-Resistant Coating) processing ensures minimal color cast and preserves accurate color reproduction throughout the image. The filter features a magnetic quick-change frame system that securely connects with compatible 100 mm K-Series filter holders, allowing for fast attachment and removal during shoots. This design enables photographers to efficiently manage exposure balance between bright sky areas and darker foreground elements without compromising image quality. The hard-edge transition provides precise control over the density gradient, making it particularly effective for scenes with clear horizon separation. The optical glass construction and specialized coating technology of the filter ensure consistent performance with wide-angle and telephoto lenses, maintaining sharpness to the edges while minimizing vignetting. The square filter format, measuring 100 mm wide and 150 mm high, offers flexibility in positioning the gradient within the image. The magnetic mounting system enhances workflow efficiency while ensuring secure attachment during active photography. This professional filter is designed for photographers who need reliable exposure control tools that deliver consistent results under various lighting conditions.