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9. Appendix
Measurement range
Illuminance in
color temperature
measurement
• Ambient light
• Flash light
5lx to 200,000lx
0.46fc to 18,600fc
20lx·s to 20,500lx·s
1.86fc·s to 1,900fc·s
Illuminance • Ambient light 1lx to 200,000lx
0.09fc to 18,600fc
Exposure • Flash light Range L: 20lx·s to 640lx·s (f/2.8 to f/16)
1.86fc·s to 59.5fc·s
(f/11.9 to f/90)
53.9fc·s to 1,900fc·s
Correlated color
temperature
• Ambient light 1,600K to 40,000K
• Flash light 4,000K to 10,000K
(20lx·s to 20,500lx·s = 1.86fc·s to 1,900fc·s
380nm to 780nm)
2,500K to 4,000K, 10,000K to 40,000K
(20lx·s to 10,200lx·s = 1.86fc·s to 947fc·s
400nm to 700nm)
Color rendering
properties
• CRI
• TM-30
• SSI
• TLCI-2012
• TLMF-2013
Ra, R1 to R15 -100.0 to 100.0
Rf 0 to 100
Rg 0 to 200
SSI 0 to 100
Qa 0 to 100
Qa 0 to 100
(5lx to 200,000lx = 0.46fc to 18,600fc)
Chromaticity
coordinate x, y
• CIE1931 0.0000 to 1.0000
(5lx to 200,000lx = 0.46fc to 18,600fc)
•
•
0° to 359°
0° to 359°
(5lx to 200,000lx = 0.46fc to 18,600fc)
Saturation •
•
0% to 100%
0% to 100%
(5lx to 200,000lx = 0.46fc to 18,600fc)
Accuracy
Illuminance ±5% ±1digit of indicated value
Color temperature ±4MK
-1
(Light source A, 800lx = 74.3fc)
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