CIE, the global lighting organization that maintains the CRI standard, is now studying TM-30:
The CIE recognizes that the colour fidelity metrics including the CRI do not assess other important aspects of the colour qualities of light sources, in particular, those related to colour preference. CIE TC 1-91 is developing a Technical Report on this subject, which will be the groundwork for developing colour preference metric(s).
The CIE encourages further research on these two aspects of colour quality, which may be useful inputs to the current or future work of CIE. In particular, the CIE supports the study of the recently published IES[1] Technical Memorandum TM-30, to which some CIE TC 1-90 members have contributed. This work was recently proposed for consideration in TC 1-90, which voted to make its Rf metric the basis for the TC’s first working draft.
The CIE also recommends that important lighting metrics such as the Colour Rendering Index require formal international agreement. New metrics introduced at the regional level could cause confusion in the global lighting market.
The process of developing CIE recommendations by scientific consensus often requires considerable time. However, the CIE is expediting the work of TC 1-90 and TC 1-91 and they both plan to complete their Technical Reports within 2016. The CRI is widely used in many regulations and specifications, therefore an orderly transition is needed when a new metric is to be introduced. For this reason the current CRI (CIE 13.3) will not be officially replaced until a new metric is widely accepted.
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