Sigma 62mm WR Protector AFD9D0 Sigma WR filters are easy to handle and feature excellent properties that make them water- and oil-repellent as well as antistatic. The protective filter is designed to shield the front lens of the camera from dirt, dust, and scratches. The completely colorless filter does not affect color reproduction, making it perfect for everyday use. Water- and oil-repellent properties (Sigma WR filter) Due to its outstanding water- and oil-repellent characteristics, the filter repels water droplets, and even fingerprints on the surface can be easily wiped away. Antistatic Thanks to its excellent antistatic properties, the filter prevents even microscopic dust particles from adhering to the surface. If the lens does become dirty, dust can be easily removed with a blower.