Take your photography to the next level with the Hoya Hrt 72mm Circular Polarizer Glass Filter. This high-quality, durable filter is designed with a newly developed High-Rate Transparency (HRT) film that allows more visible light to pass through, while effectively filtering the same amount of polarized light. The Hoya HRT Circular Polarizer Filter stands out in its category by transmitting up to 25% more light through the polarizing film. This gives photographers about 1/3 stop more light than a standard circular polarizer, offering greater versatility in various lighting conditions. This advanced polarizing film is also utilized in the latest Hd Lcd TVs, showcasing its cutting-edge technology. The glass of the Hoya HRT filter boasts Uv absorbing properties, making it a combination Uv/circular polarizing filter. This dual functionality makes it a valuable addition to any photographer's toolkit. The most common use for a circular polarizer filter like the Hoya HRT is to darken bright blue skies in outdoor photography. However, its versatility extends beyond that. It can also reduce or eliminate reflections from non-metallic surfaces such as glass and water, enhancing the quality of your images. By simply rotating the outer ring of the filter, you can control the change of effect. This can be observed by looking through the filter or through the viewfinder if it is mounted on a camera. Hoya, the world's largest optical glass manufacturer, produces glass to spec for almost every camera and lens manufacturer. As the world's largest filter manufacturer, Hoya is a reputable brand known for its high-quality photography equipment. The Hoya HRT 72mm Circular Polarizer Glass Filter is a testament to their commitment to quality and innovation..