' LP Standard Pro - National Photonic Ltd.

LP Standard Pro

£1,790.00 excluding VAT

Light spectrometer for Film and Studio

When combined with the Spectrum Genius Studio APP for iOS the Asensetek Lighting Passport Spectrometer is the perfect tool for Film and Studio lighting professionals such as Producers, Colourists, Gaffers and technicians.

  • Reduce time to set studio lighting
  • Minimise post-processing
  • Comply with Television Lighting Consistency Index (TLCI)
  • Lighting Passport Spectrometer
  • Clipper for SMART devices (Android and iOS)
  • Stand
  • Charging adapter + cable
  • Firm-shell product protective case
  • Software CD and Quick Start Guide
  • Calibration and Warranty certificates
  • Continuous measurement
  • Background subtraction

Available on backorder

SKU: 0002 Category:


The Asensetek Lighting Passport Standard Spectrometer is perfect for fast, accurate selection and adjustment of film and studio lighting

  • Reduce time to set studio lighting
  • Minimise post-processing
  • Comply with Television Lighting Consistency Index (TLCI)

The TLCI metric (Television Lighting Consistency Index) was developed to address the shortcomings of traditional CRI measurement techniques.  Because cameras interpret light differently to how the human eye perceives it, the TLCI provides a more accurate prediction of the colour rendering characteristics of film and studio lighting.

The Spectrum Genius Studio (SGS) APP for iPad provides users with the ability to get all the TLCI information easily and quickly.  When used with the Lighting Passport Spectrometer, “Spectrum Genius Studio (SGS)” allows professionals such as producers, colourists, gaffers, and technicians to get full and detailed information about the TLCI of a specific light source or the entire set up.

What is the Television Lighting Consistency Index (TLCI) metric?

The TLCI value is an index on a 0-100 scale that is a composite of multiple parameters.  Television and film studio production often adopts a TLCI > 90 as a minimum starting point, providing cinematographers and gaffers a fast, accurate method to quantify lighting and avoid spending a lot of time and effort on extensive testing while minimising the amount of post-processing required.

Simply select TLCI as the reference standard and SGS will compare your measured light source with the TLCI Standard values and tell you how much your measured light differs from the Standard.

In addition to TLCI, the “Spectrum Genius Studio (SGS)” APP also provides several other useful parameters such as CRI, CQS, and CCT.


Specifications – Std. Pro

Iluminance: lux (Minimum Measurable) 5
Illuminance Range: lux (With Reliable Chromaticity) 50 – 50000
Illuminance Accuracy (@ 1000 lux) +/-3%
Chromaticity Accuracy: x,y (@ 1000 lux) +/- 0.002
Chromaticity Repeatability: x,y <0.001(<0.0005 in precision mode)
Wavelength Range: nm 380~780
Resolution: nm 8
CCT Accuracy (@ 1000 lux) +/-2%
Flicker precision range 200 – 50000 lux
Flicker frequncy range 5 – 200 Hz
Flicker accuracy +/- 5%
Weight 79 g
Dimensions 68.5 x 17 x 56 mm

Measurements – Std. Pro

CCT – Correlated Colour Temperature
TM-30-15 – IES Method for Evaluating Colour Rendition
CRI (Re) – Colour Rendering
CRI (Ra) – Colour Rendering
CQS – Colour Quality Scale (NIST)
lux – Illuminance
Foot Candle
CIE 1931 – Chromaticity Coordinate
CIE 1976 – Chromaticity Coordinate
C78.37 7-2008
IEC-SDCM – Standard Deviation of Colour Matching
λp – Peak Wavelength
λD – Dominant Wavelength
Pe – Purity
Duv – Colour shift based on the CIE 1960 u-v coordinates
SP Ratio – Scotopic:Photopic Ratio
PPFD – Photosynthetic Photon Flux Density
TLCI (QA) – Television Lighting Consistency Index (European Broadcasting Union)
GAI – Gamut Area Index
Flicker Index
Flicker %
Flicker Frequency