(Click "More Images" above to see example photos of with and without the filter.)
The 80A filter is a blue conversion filter for use when shooting in tungsten light with daylight balanced film. It increases the color temperature from 3200°K to 5500°K.
Calumet Multi-Coated filters minimize flare and ghost imaging in situations where unwanted light falls on filter surfaces. The result is an average light transmission of over 97 percent, producing sharp contrast and well-balanced color. MC filters are highly recommended for obtaining the performance inherent in multi-coated camera lenses.