Rosco Roscolux 1/4 Hamburg Frost Light Diffusing Sheet

The Roscolux 1/4 Hamburg Frost from Rosco is a professional light diffusing sheet designed to gently soften the output of stage, film, and studio lighting instruments. As a quarter-strength frost, it reduces harsh shadows and specular highlights while allowing the majority of light to pass through with minimal loss. This makes it an ideal choice when you want to take the edge off a hard source without losing punch or creating an overly diffused wash.

What sets Roscolux apart from generic diffusion materials is its tri-extrusion manufacturing process. The diffusion layer is sealed between two microscopically thin layers of clear film, which protects it from the intense heat generated by theatrical lighting instruments. This construction minimizes dye migration and extends the effective lifespan of each sheet significantly. The standard 20" x 24" format is compatible with most professional gel frames and can be quickly trimmed to fit any fixture or modifier in your kit.