Sekonic C-4000 SpectroMeter

The Sekonic SpectroMeter C-4000 is a compact, high-precision spectrometer designed for professionals, offering advanced light and color analysis with touchscreen control, Bluetooth connectivity, and support for industry standards like CRI, TLCI, SSI, and TM-30.

The Sekonic SpectroMeter C-4000 is a cutting-edge professional spectrometer built for lighting technicians, cinematographers, and photographers who require the highest level of accuracy in light and color measurement. Utilizing an advanced CMOS sensor, it analyzes the full visible light spectrum from 380 to 780 nm with exceptional 1 nm resolution, delivering precise and consistent results even in demanding production environments.

The C-4000 provides comprehensive lighting analysis, including key metrics such as correlated color temperature (CCT), CRI, TLCI, SSI, TM-30-18, and chromaticity coordinates. It also measures illuminance in lux, foot-candles, and candela/m², and calculates correction filters like CTO, CTB, and green/magenta adjustments to help balance lighting setups perfectly.

Designed for modern workflows, the device features a 2.7" color touchscreen LCD for intuitive control and quick access to functions. With built-in Bluetooth and USB-C connectivity, users can seamlessly transfer data to computers or mobile devices. Integration with the Sekonic LD app allows advanced analysis, including attaching measurements to photos, adding GPS coordinates, and generating detailed PDF or CSV reports.

The C-4000 supports industry-standard evaluation systems such as CRI, TLCI, SSI, and TM-30-18, making it ideal for film productions, broadcast studios, photography, and event lighting. It also visualizes spectral data using the CIE 1931 color space for precise color control.

Compact, lightweight, and highly portable, the Sekonic C-4000 is designed for both studio and field use, delivering professional-grade performance wherever it’s needed.

Key Features

• High-precision spectrometer with 380–780 nm range and 1 nm resolution
• Measures CCT, CRI, TLCI, SSI, TM-30-18, and chromaticity coordinates
• Illuminance measurement in lux (lx), foot-candle (fc), and cd/m²
• Calculates color correction filters (CTO, CTB, green/magenta)
• 2.7" color touchscreen LCD with intuitive interface
• Bluetooth and USB-C connectivity for data transfer
• Compatible with Sekonic LD app for advanced analysis and reporting
• Memory for up to 99 measurements
• Compact, lightweight, and portable design
• Suitable for studio, on-set, and field use