| Measurement functions |
Tristimulus values: XYZ
Chromaticity: Ev xy, Ev u'v'
Correlated colour temperature: Tc
Colour difference: Δ (XYZ), Δ (Evxy ), Δ (Evuv ), ΔE v ΔTc Δuv
Chromaticity coordinates: ICE1931 (x, y), ICE1976 (u, v)
Dominant wavelength: λd
Colour fastness: Pe
Luminous flux: Φ, RGB parameter, colour chart, maximum recording and indicator |
| Measuring range |
0.1 ... 150,000 lx
0.01 ... 15000 fcd
Ev: 5 lx / 0.5 fcd or above in four automatically selected ranges (lx or fcd is switchable) |
| Spectral range |
360 ... 780 nm |
| Relative spectral sensitivity |
Based on CIE standard X (λ), y (λ), and Z (λ), deviation within 6% (f1 ') of CIE spectral luminous efficiency V (λ) |
| Cosine correction |
Ev: < 3% (f2) |
| Accuracy |
Ev : ± 5 % ± 1 digit of displayed value
Xy: ± 0.003 lx (at 500 lx, standard A) |
| Repeatability |
Ev : ± 0.5% + 1 digit (2σ) |