Rosco 3411 Rosco Sun 3/4 CTO Lighting Gel Sheet

The Rosco 3411 Rosco Sun 3/4 CTO gel sheet is a color correction filter designed to convert 5500K daylight-balanced light sources down to approximately 3200K tungsten. This makes it invaluable in mixed-lighting scenarios where you need daylight-balanced fixtures to match the warmer tones of tungsten practicals or ambient interior light. As a 3/4 strength CTO, it applies about 75% of the full correction, which many users find produces a more natural and flattering warmth than a full CTO while still closing most of the color temperature gap.

Supplied as a flat gel sheet, it can be cut with scissors or a blade to fit any frame, barn door, or fixture. Rosco is one of the most widely used gel manufacturers in the film and photography industries, and the 3411 maintains the brand's reputation for optical consistency and color accuracy. Whether you are matching mixed sources on a film set, warming a key light for portrait photography, or adding creative warmth to a scene, this gel provides a simple and affordable solution that requires no power or digital processing.