The Urth 52mm Magnetic Infra-Red (R72) Filter Plus+ is a specialized photography filter for infrared photography applications. With a thread diameter of 52 mm, it is compatible with lenses of the same size and utilizes a magnetic attachment system for quick mounting and dismounting. The R72 designation indicates that it blocks visible light wavelengths below approximately 720 nanometers, allowing only infrared and some near-infrared light to pass through, which enables creative infrared photography effects. Made from optical glass, the filter maintains image quality while providing the necessary spectral filtering. The magnetic mounting system offers photographers convenience when switching between different filters during shooting. This filter is suitable for both digital and film photography when used with cameras that have sufficient infrared sensitivity, with results varying depending on the camera sensor characteristics. The 52mm size fits various standard lenses, and the filter's design prioritizes both optical performance and user-friendliness in field conditions.