CTO gel, or Color Temperature Orange gel, is a type of color filter used in lighting to adjust the color temperature of light sources, specifically to warm up the output of cooler lights like daylight-balanced bulbs. It is commonly utilized in theatrical lighting to create a more natural and inviting atmosphere, as well as to complement other colors in a lighting design. By converting the cool tones of lights into warmer hues, CTO gels help to enhance the emotional tone of a performance.
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