Are you a discerning landscape photographer in search of the most color-neutral Nd filter Look no further than the 82mm X4 Solid Neutral Density 0.9 Filter, a product of Breakthrough Photography's cutting-edge research and innovative manufacturing methods. This 3-stop Nd filter is designed to deliver unparalleled color neutrality, enhancing your landscape photography with superior contrast and color.The X4 Nd filter is crafted with Schott Superwhite B270 optical glass, an ultra-clear crown glass produced by melting high-purity raw materials. This continuous draw process results in exceptional transmission in the ultraviolet, visible, and infrared spectrums, and a high surface quality that readily accepts state-of-the-art Mrc and nanotec coatings.Featuring Breakthrough Photography's proprietary MRC16, a multi-resistant coating applied to both surfaces of the glass disk, this filter reduces reflection and increases surface durability. This structurally harder coating improves efficiency by reducing light loss and eliminating stray light, resulting in better contrast and color in your images.Designed as a workhorse Nd filter for field work, the X4 Nd is built to withstand extreme wind, salt water, dust, and other abrasive conditions. Its state-of-the-art nanotec Nano Coatings Technology beads water and other elements rather than absorbing and smearing, ensuring the filter's longevity and performance.Unlike many neutral density filters on the market that exhibit a strong blue or magenta cast, the X4 Nd filter offers the most color-neutral performance. This is achieved through an alternative manufacturing method to the conventional oven process, ensuring a more precise and consistent color profile.The X4 Nd filter also boasts a flat transmission curve, guaranteeing a color-neutral result. Unlike traditional Nd filters, the X4 Nd maintains a well-controlled and flat transmission throughout the visible spectrum and into Ir. The filter frame has been redesigned from the ground up, constructed of high-quality brass Cnc machined with Breakthrough Photography's signature traction frame. This makes the X4 Nd easier than ever to attach and remove securely, even in cold conditions with gloves on. In summary, the 82mm X4 Solid Neutral Density 0.9 Filter is a reliable, versatile, and high-quality tool for any landscape photographer seeking to enhance their work with professional-grade image quality..