Thinner The Hoya 58mm Ultraviolet UV Haze Filter is a wise initial investment. It helps protect your valuable investment from dust moisture and scratches which can lead to costly repairs. The C on the filter ring designates Hoya's thinner design for this filter. This filter has its UV properties in the multi-coating. The result is an average light transmission of over 97% giving sharp contrast and well balanced color. Hoya HMC filters are recommended for enhancing the performance of today's multi-coated digital lenses. It is multi-coated to minimize reflections and reduce flare and ghosting.