Hoya 52mm PL Circular Polarizing Camera Lens Filter. Made In Japan. Polarizing filters on cameras filter light that is linearly polarized, then circularly polarize the light entering the camera so as not to affect the camera’s sensors. A Circular Polarizing Filter can increase contrast, darken skies and reduce reflections. The same effects are achievable in color and black and white photography.
 
Features:

• Circular Polarizer Filter
• Helps to Eliminate Reflections and Glare
• Reduces Haze in Landscapes
• Greater Color and Tonal Saturation
• Optical Glass
• Aluminum Frame
• 52mm Front Filter Threads
• Plastic Case