Hoya HMC Filter Circular Polariser 72mm Hoya's popular HMC (Hoya Multi Coated) filters are renowned for their ability to minimise reflection at the filter surfaces which reduces flare and ghosting. The result is an average light transmission of over 97%, giving sharp contrast and well balanced colour. Hoya HMC filters are recommended for enhancing the performance of today's multi-coated lenses. This 72mm HMC Circular Polarising filter offers colour and contrast enhancement. It allows you to select which light rays enter your camera lens and remove unwanted reflections from non-metallic surfaces such as water, glass etc. It also filters out atmospheric haze enabling colours to become more saturated and appear clearer, with better, sharper contrast. This polarising effect is often used to increase the contrast and saturation in blue skies and white clouds. Hoya's polarising filters do not affect the overall colour balance of a shot. Circular polarising effects are invaluable to photographers at any level of interest.