The Urth 49 mm Infrared R72 Lens Filter Plus+ is a circular filter designed for lens threads with a 49 mm diameter, enabling infrared photography by blocking all visible light wavelengths below 720 nm. This feature allows for the capture of infrared light beyond human vision, making it ideal for creative outdoor and nature photography. The filter boasts 20 nanocoating layers for enhanced durability, easier cleaning, and protection against water, oil, and scratches, while maintaining high light transmission and consistent performance for sharper images and finer color depth. Made from high-quality SCHOTT glass from Germany, it ensures professional clarity and true color balance. The ultra-thin magnalium rim minimizes vignetting, and the double-threaded design supports filter stacking or use with screw caps. Please note that this filter is not compatible with cameras that have an internal IR cut filter. It is suitable for photographers looking to explore infrared imaging with reliable, high-quality equipment.