Hmc hoya multi coated the hoya 80b hoya multi coated hmc glass filter blue is renowned for its ability to minimise reflection at the filter surfaces which reduce flare and ghosting the result is an average light transmission of over 97 giving sharp contrast this filter is often used to balance daylight film under tungsten artificial or standard household incandescent lighting hoya hmc filters are recommended for enhancing the performance of todays multicoated lenses