Sekonic Spectrometer C-4000

The Dream Tool for Lighting Designers The Sekonic C-4000 Spectrometer has been designed and engineered specifically for lighting designers and field technicians. Combining precision light-measuring technology, renowned in the industry, with the flexibility and convenience of smartphone technology, the C-4000 Spectrometer leads in a new direction for future Sekonic meters. Offering a compact, lightweight, sophisticated, and affordable solution for the lighting professional, the C-4000 is a break-though solution to light management and evaluation. With its 2.7” color touch screen, Bluetooth® enabled wireless communication, and compatibility with Apple® and Android™ smartphones/tablets, the C-4000 offers the most flexible and real-time on-location data sharing than any other system in the market today. The C-4000 offers a standalone basic numeric reading from the meter, wireless remote measurements via the free SEKONIC LD App and smartphone/tablet or advanced SEKONIC LD paid App offer extensive functions including plot measurements. Measurement data such as spectrum graphs, CRI, TM-30-18, CIE 1931 chromaticity coordinates (x, y) as well as plotted readings are displayed in full color with the high-quality resolution of your smart device. Stored measurement data, configuration settings and functions can be reviewed and adjusted on your smart device. Data can be shared via screenshots, real-time generated reports, and images of onsite locations with GPS coordinates. The C-4000 offers a comprehensive package of measurement data, shared with offsite designers, engineers, technicians and clients. Measuring Color Temperature (TCP) from 1,600K to 40,000K Provides Light Quality information such as Ra, 𝛥uv, Lux/fc, TM-30-18 (Rf, Rg), Chromaticity coordinates (x,y) etc. Smart Device Ready with Free Sekonic LD App Continuous/Single measurements USB-C connectivity for firmware updates via the Sekonic utility Specifications Model: Sekonic C-4000 Spectrometer Sensor: CMOS linear image sensor Measuring System: Spectro Meter Incident light Measuring Range and Modes: Measurement range *1: Wavelength: 380nm to 780nm Illuminance: 5lx to 10,000lx (0.46fc to 929fc) Color Temperature (Tcp): 1,600K to 40,000K Color Rendering Properties: CRI Ra -100.0 to 100.0 TM-30 Rf 0 to 100, Rg 0 to 200 Accuracy (Light source A): Illuminance: +/-5% +/-1 digit (5 lx to 3,000 lx), +/- 7.5 % +/- 1 digit (over 3,000 lx) x,y: +/-0.003 (800lx) Repeatability (2σ, Light source A): Illuminance: 1 % + 1 digit (30 lx to 10,000 lx), 5 % + 1 digit (5 lx to 29.9 lx) x, y: 0.001 (500 lx to 10,000 lx) x, y: 0.002 (100 lx to 499 lx) x, y: 0.004 (30 lx to 99.9 lx) x, y: 0.008 (5 lx to 29.9 lx) Spectral response characteristics (f1): 9% or less Oblique incident light characteristics (f2): 12% or less Temperature characteristics: Illuminance: +/- 5% x,y: +/-0.006 (Light source A, 1,000lx) Humidity characteristics: Illuminance: +/- 3% x,y: +/-0.006 (Light source A, 1,000lx) Measurement time: Max. 15sec, Min. 2sec Display value: Illuminance (lx/fc), Tcp*2 (K), uv, CRI (Ra), TM-30 (Rf, Rg), Chromaticity coordinates (x, y) Other functions: Data memory up to 99 items, Auto power-off, Auto dimmer Language: Selectable from English, French, German, Italian, Spanish, or Japanese Physical: Operating Temperature: 5 deg.C to 35 deg.C, without condensation Storage Temperature: -10 deg.C to 60 deg.C, 85 % RH or less (at 35 deg.C), without condensation Power Source: AA battery (1.5V) x 2, USB bus-power Interface: USB connector (type C), Bluetooth Operating humidity: 85% or less (at 35 deg.C), without condensation Product Weight (lb): 0.3 Product Weight (kg): 0.14 Product Height (in): 5.5 Product Length (in): 1.18 Product Width (in): 2.44 Product Height (cm): 14 Product Length (cm): 3 Product Width (cm): 6.2 Comparison Chart Model # C-4000 C-7000 C-800 Applications Lighting designer, Lighting installer, Museum lighting coordinator,　Photographer Industrial (lighting manufacturer, lighting designer, etc.), Academic research Photographer, Filmmaker, industrial use Measuring Range 1,600 to 40,000K 1,543 to 100,000K 1,600 to 40,000K   5 to 10,000lx 1 to 200,000lx 1 to 200,000lx     20 to 20,500lx„s 20 to 20,500lx„s Measurement Unit Kelvin, Δuv, lx, fc,  Kelvin, Δuv, lx, fc, Hlx, Hfc, Kelvin, Δuv, LB/CC index,   Ra, Rf, Rg, xy Ra, R1 to R15, Rf, Rg, SSIt, LB/CClf, LB/CCcf, lx, fc, Hlx,     SSId, TLCI, XYZ, xyz, u'v', Hfc, Ra, R1 to R15, Rf, Rg,     λd, λp, Pe, PPFD SSIt, SSId, TLCI, xy,       Hue/Saturation Display Mode Text Text, Spectrum, Spectrum Text, Spectrum, Spectrum     comp., CRI, CRI comp., comp., CRI, CRI comp.,     TM-30-18, SSI, TLCI/ TM-30-18, SSI, TLCI/TLMF,     TLMF, CIE1931 (CIE1964), Filter (Camera or Lighting),     CIE1931 (CIE1964) comp., Multi lights, WB comp.     CIE1976, CIE 1976 comp.   Software Smartphone/tablet app, Utility Excel Add-in, SDK, Utility Utility Other Functions Continuous/Single measurement selection, Up to 99 memory, Bluetooth interface for smartphone/tablet app Continuous/Single measurement selection, Up to 999 memory, 1nm increment spectrum output by Utility, 2°or 10° field of view Up to 99 memory, Memory title can be edited in Utility, Memorized value can be saved back and forth between computer and meter. Downloads Sekonic Spectrometer C-4000 Instruction Manual Sekonic Spectrometer C-4000 Datasheet   Videos