NiSi Swift True Color Pro Nano Coating 82mm High Definition Waterproof Circular Polarizing FilterThe NiSi Swift True Color Pro Nano Circular Polarizing Filter for 82mm True Color VND and Swift System reduces glare and reflections from non metallic surfaces and increases saturation and vibrancy in the sky and foliage while ensuring true color reproduction is at its best by eliminating the warming effect that many polarisers create. The True Color CPL removes the warm tone seen with other brands of CPL filters and provides a closer true color