The Irix Filter Edge 100 Hard nano GND4 0.6 is a high-quality lens filter specifically designed for photographers who desire precise control over the exposure of their shots. With a size of 100x150 mm, this neutral density filter is ideal for use with various lenses and filter holders. The hard graduated filter allows for darkening the sky in landscape shots while keeping the foreground bright, resulting in a balanced and harmonious image. The nano-coating enhances light transmission and reduces reflections, further optimizing image quality. The filter is designed as a screw filter, allowing for easy handling and mounting. It is an essential tool for photographers working in both nature and architectural photography, offering the creative freedom that this filter provides.