The Rosco CalColor #4230 Blue Filter (1 Stop, 48"x25' Roll) is designed specifically to the spectral sensitivity of color film. This filter color is designed in 30 density corresponding to the familiar 1 stop calibration. In color photography, the light-sensitive emulsion layer separately record the individual blue component of the spectrum.
CalColor filter adjusts the transmission of the color component at the individual light source in a familiar and reliable manner. As a result, the cinematographer can exercise selective and predictable control over the image's coloration as rendered by the film.
|Roll Size||48"x25' / 122cmx7.6m|
|Application||Photographic lighting filter equal to CC30B. Enhances blue transmission by effectively reducing green and red exposure by 1 stop. Heat resistant base. Deep dyed|