Rosco Roscolux 24 Inch x 25FT Gel Roll Third Blue

Roscolux 24 Inch x 25 Ft. Gel Roll; Third Blue
Boosts 3200K to 3800K

Roscolux is comprised of two types of plastic. More than 65% of the line is made from co-extruded polycarbonate plastic. The remainder of the line is deep dyed polyester.

HOW COLOR FILTERS WORK
Filters create color by subtracting certain wavelengths of color. Thus, a red filter absorbs blue and green, allowing only the red wavelengths to pass. The process is subtractive, not additive, so the light source must emit a full spectrum.