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Can anyone tell how to measure the R1-R14 [0] values of a LED lamp? It seems like a sort of a Gretag-Macbeth [1] card is used. Can I use a photospectrometer [2]

• andreareina 9y ago
  There seems to be little overlap in the Munsell colors between the two[1][2]. There does appear to be a variant that uses some ColorChecker patches[3], or there's another calculation that just goes directly off of the light's emission spectrum[4], assuming your spectrometer has enough resolution. I think in practice, an ad-hoc comparison of the ColorChecker under daylight/D65 and the light in question will yield good enough results. [1] https://en.wikipedia.org/wiki/Color_rendering_index#Test_color_samples https://en.wikipedia.org/wiki/Color_rendering_index#Test_col... [2] https://en.wikipedia.org/wiki/ColorChecker#Colors https://en.wikipedia.org/wiki/ColorChecker#Colors [3] https://en.wikipedia.org/wiki/Color_rendering_index#New_test_color_samples https://en.wikipedia.org/wiki/Color_rendering_index#New_test... [4] https://en.wikipedia.org/wiki/Color_rendering_index#Example https://en.wikipedia.org/wiki/Color_rendering_index#Example