The Urth 52mm Infrared R72 Lens Filter Plus+ is a professional photography accessory for infrared imaging applications. This circular filter effectively blocks all visible light wavelengths below 720 nm while allowing infrared light to pass through, enabling photographers to capture unique infrared images that reveal otherwise invisible spectral information. Made from high-quality German SCHOTT optical glass, the filter ensures professional clarity and true color balance in infrared photography. The filter features 20 layers of nanocoating technology, providing enhanced protection against water, oil, and scratches, while also facilitating easier cleaning and maintenance. This advanced coating system allows for higher maximum light transmission and more consistent transmission properties across the infrared spectrum, resulting in sharper image quality with finer color reproduction and greater depth in the captured images. The ultra-slim magnalium edge design minimizes vignetting risks when used with compatible lenses, while the double-threaded construction allows for filter stacking or the attachment of standard screw-thread lens caps. With a diameter of 52 mm, this infrared filter is specifically designed for outdoor and nature photography applications, where capturing infrared light can open up unique creative possibilities. The R72 designation indicates the cutoff wavelength of the filter at 720 nm, making it suitable for capturing the infrared spectrum above this threshold. It is important to check camera compatibility before use, as this filter is not designed for cameras with built-in infrared cut filters in front of the sensor. The durable construction and precise optical elements ensure reliable performance for professional photographic workflows that require infrared imaging capabilities.