The Urth 43mm Magnetic Infra-Red (R72) Filter Plus+ is a specialized photographic filter for infrared photography. This 43mm diameter filter features a magnetic mounting system for quick attachment and removal from compatible lenses. The designation R72 indicates that it blocks visible light below approximately 720 nanometers while allowing infrared wavelengths to pass through, enabling creative infrared photography effects. Made from optical glass with multi-layer coating, this filter preserves image quality and provides the specific spectral transmission required for infrared work. The magnetic mounting system allows for quick filter changes without threads, making it suitable for photographers working under changing conditions. The 43mm size fits lenses with corresponding filter threads, and the slim profile of the filter minimizes vignetting with wide-angle optics. This filter allows photographers to capture scenes with characteristic infrared properties, including darkened skies, increased contrast in foliage, and unique tonal renditions. When using infrared filters, proper exposure compensation is typically required, as they significantly reduce the transmission of visible light. The filter is compatible with both digital and analog camera systems, with digital sensors possibly requiring modification or specific camera models for optimal infrared response. The magnetic attachment provides a secure hold while ensuring precise optical alignment. This specialized tool expands the creative possibilities for photographers looking to explore infrared imaging techniques beyond standard visible light photography.