The 203 Quarter Color Temperature Blue Filter from LEE Filters is uniform in color and with a mired shift value of -35, can be applied over a light fixture to purposely create a cool cast over a scene. This filter is constructed from polyester that is heat resistant to 356°F and is delivered as a 48" x 25' roll on a 1" core.
This filter is useful for converting tungsten light sources with a color temperature of 3200K to 3600K. Under 3200K tungsten light, the 203 Quarter Color Temperature Blue Filter exhibits a 0.15 density and transmits light at 70.5%. Under 6774K Source C light, it exhibits a 0.16 density and transmits light at 69.3%.