Our CTB Filters provide precise control over color temperature by shifting light toward the cooler, blue end of the spectrum. Whether you need to convert tungsten sources to match daylight, fine-tune LED output for camera calibration, or create a crisp, clinical atmosphere in architectural lighting, these filters deliver accurate and repeatable results. Available in standard strengths from full CTB down to fractional increments like ¼ and ⅛, they give you the flexibility to dial in exactly the color shift your application demands—from subtle correction to dramatic transformation.

Engineered for professional durability, our CTB Filters feature hard-dielectric coatings on high-quality optical glass that withstand temperatures up to 450°C and pass MIL-M-13508C environmental testing. Unlike disposable gel filters that fade and warp under heat, these are built for continuous, long-term use in demanding environments like film sets, broadcast studios, and industrial inspection systems. We custom-cut any size or shape, and can tune filters to your specific target CCT shift. Simply provide your requirements, and we'll deliver a precision-engineered solution ready for integration.