Unfortunately, CRI or Ra, agreed upon in 1974, is more of a "how well do eight pastels look when illuminated by this light spectrum?"
CIE's R96a (1999) remains stuck in a disagreement between scientists and manufacturers. This means that lights currently specified with a CRI value are advertising an inaccurate measure of their ability to reveal the color of objects.
Unfortunately, CRI or Ra, agreed upon in 1974, is more of a "how well do eight pastels look when illuminated by this light spectrum?"
CIE's R96a (1999) remains stuck in a disagreement between scientists and manufacturers. This means that lights currently specified with a CRI value are advertising an inaccurate measure of their ability to reveal the color of objects.
https://en.wikipedia.org/wiki/Color_rendering_index