Hoya HMC Multi Coated Filters. These popular filters are renowned for their ability to minimise reflection at the filter surfaces which reduces flare & ghosting. The result is an average light transmission of over 97 giving sharp contrast & well balanced colour. Hoya HMC filters are recommended for enhancing the performance of todays multicoated lenses. Hoya are the largest world-wide producer of optical glass in fact around 60 of the entire world-wide demand & supply is met by Hoya. It is important to select the best filters for your needs as choosing inferior brands can deteriorate the performance of your high quality lenses. Hoya filters guarantee you the highest standards so you can create the best images.