How does the Hoya R72 Infrared Filter transform your photography experience Specifically designed for infrared photography, this high-quality filter is compatible with both digital cameras and infrared film. Infrared light, which begins in the high-red area of the visible spectrum at around 750nm and extends beyond 1000nm, is invisible to the naked eye. However, the Hoya R72 Infrared Filter is engineered to capture this elusive light spectrum. When you peer through the R72 filter, it appears almost opaque. This is because it's meticulously designed to only pass light from the very high red edge of the visible spectrum and infrared light. This unique feature allows you to capture images that reflect infrared light differently than normal light, resulting in intriguing, often breathtaking, and creative results. The Hoya R72 Infrared Filter is not just a tool, but a gateway to a new realm of photography. It's important to note that due to the distinct nature of infrared light, filter factor and exposure compensation can vary significantly from visible light and largely depend on lighting conditions. This durable and versatile filter, produced by the reputable brand Hoya, known for its superior optical products, is an essential accessory for any photographer looking to explore the captivating world of infrared photography..