Under the precise demands of film and video production, the Rosco Cinegel Quarter Blue (1/4 CTB) stands as an essential tool for cinematographers and lighting professionals seeking to achieve the perfect color balance. This high-quality 48"x25' roll of color correction lighting filter is expertly crafted to elevate 3200K tungsten sources to a cooler 3500K, effectively compensating for varying daylight conditions, voltage fluctuations, and the natural aging of HMI lamps or household incandescent sources.The Cinegel Quarter Blue filter is meticulously designed with a deep-dyed base, ensuring heat stability and superior color transmission with a mired shift of -30 and 74% transmission, resulting in a subtle -0.4 stop reduction in light intensity. This technical precision allows for a partial conversion that is ideal for fine-tuning the color temperature without overpowering the scene.As part of the Tungsten Conversion Filters range, this 1/4 CTB filter is not only perfect for balancing tungsten-halogen sources with daylight but also opens up a world of technical and aesthetic color correction possibilities. Whether you're looking to enhance the visual mood or correct color imbalances, this filter's versatility makes it a go-to solution for a wide array of lighting setups.The generous dimensions of the roll, measuring 48 inches in width and 25 feet in length, provide ample material that can be custom-cut to fit various lighting fixtures or camera lenses. T