Formatt Hitech 138mm 80B Color Conversion Filter

Enabling the use of daylight-balanced film under tungsten-lit conditions, this 138mm 80B Color Conversion Filter from Formatt-Hitech 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.