Hoya 62mm Standard 80B Blue
Hoya 62mm Standard 80B Blue Filter is a lightweight and durable filter that is
designed to work with daylight-balanced film under tungsten-lit conditions. This
filter from Hoya is a cooling filter used to increase the color temperature from
3400K to 5500K. The blue color of the filter has a filter factor of 3x,
requiring an additional 1.6 stops of exposure to achieve normal results. It is
constructed from optical glass and has a six-layer HMC coating to reduce surface reflections and glare in order to retain high image accuracy, clarity and contrast. It is mounted within a durable, lightweight aluminum ring that has a hard-anodized finish to guard against wear.