Breakthrough Photography 150x170mm 2-Stop Hard X4 Graduated Neutral Density Filter

With unparalleled precision and performance, the 150x170mm 2-Stop Hard X4 Graduated Neutral Density (GND) Filter stands as the pinnacle of optical excellence, boasting the title of the world's sharpest GND. Crafted with the utmost care, this filter is the product of advanced technology derived from our industry-leading X4 ND filter lineage.

The X4 GND is constructed from tempered SCHOTT B270 optical glass, a premium material renowned for its exceptional clarity and strength, and produced in Germany's esteemed glassmaking facilities. This glass ensures that the filter delivers the highest level of sharpness and an unmatched color neutrality, setting a new standard for GND filters.

Graduated Neutral Density filters are essential tools for photographers aiming to balance the exposure between bright and dark zones within a scene. They are particularly useful for capturing landscapes and skies, where the dynamic range of the camera may fall short of the scene's contrast. By using a GND filter, photographers can prevent overexposed highlights and achieve a well-balanced exposure with rich details, all in-camera, without resorting to post-processing techniques such as HDR or exposure blending.

The X4 GND operates on a simple yet effective principle: it selectively reduces the amount of light entering the lens in the brighter part of the scene without affecting the darker areas. This technique is akin to the Zone System developed by Ansel Adams, which allows for precise control of tonality in analog darkroom processing.

Our X4 GND is not only a marvel in optical performance but also in durability. Unlike traditional resin-based filters, the SCHOTT B270 optical glass resists common environmental damages such as scratches from sand or corrosion from saltwater. Its structural integrity prevents warping, ensuring that the filter remains perfectly flat, which is crucial for maintaining image quality, especially when using wide-angle lenses.

The filter features state-of-the-art MRC16 and nanotec® coatings applied to both sides of the glass. These multi-resistant coatings significantly reduce surface reflections, while the nanotec® coatings facilitate ease of handling and cleaning. Additionally, the smooth gliding of the X4 GND in its holder is a testament to the thoughtful engineering behind its design.

Attention to detail extends to the edges of the X4 GND, which are meticulously milled and finished with a protective coating to prevent chipping and wear. This attention to the filter's durability ensures that it remains a reliable part of a photographer's toolkit for years to come.

Each X4 GND is accompanied by a protective diamond case, designed for both security and convenience. These robust cases shield the filter from potential damage while in transit and are color-coded for quick identification, allowing photographers to swiftly select the appropriate filter for their shooting conditions.

In summary, the 150x170mm 2-Stop Hard X4 Graduated Neutral Density Filter is a testament to the fusion of cutting-edge technology and robust design, offering photographers a tool that not only enhances their creative vision but also withstands the rigors of outdoor photography.