The proliferation of solid-state light sources has highlighted the limitations of the CRI metric as a predictor that fully represents how people perceive color. This article in ARCHITECTURAL LIGHTING describes these limitations and efforts to create a new metric.
Check it out here.
In March 2013, the IES formed the Color Metric Task Group to investigate alternatives to CRI. The group is currently writing a Technical Memorandum that may propose a path toward a new color metric.
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