One of the best accessories you can use to improve the quality of your photographs is to reduce or eliminate the glare caused by the harsh lighting of the midday sun. Polarizer’s also remove the unwanted reflections from metal or water. The Hoya circular Polarizer Glass Filter reduces midday glare while intensifying the blue sky. You simply adjust the circular ring to achieve the desired effect. Remember to keep the polarizer snug in its pouch and properly cleaned.