Nikon 77mm Circular Polarizer II Filter Protect your lens and enhance your photos The Nikon Circular Polarizing Filter is ideal for removing unwanted reflections from non-metallic surfaces such as water and glass, and it also improves color saturation, clarity and contrast. This threaded filter is often used to increase the contrast and saturation in blue skies and white clouds, for example. This filter will not affect the overall color balance of a shot, and will provide protection for your lens while shooting. Nikons II polarizing filters are made especially thin and can be used with wide-angle lenses. Dedicated bayonet hoods can also be used.