Even without realizing it, we experience the effects of the Color Rendering Index (CRI) daily. We notice it when objects appear different inside versus outside.
That’s why we’re learning about "Why It Matters" with CRI.
Part 1 - What is CRI?
CRI measures a light source’s ability to reveal colors of objects compared to sunlight, rated from 0 to 100. It’s based on 8 color samples (R1 to R8), averaging to produce the CRI score. Higher values indicate better color fidelity.
Those initial measurements do not include additional Special CRI samples, R9 to R15. Over the years, with improvements in LED tape light, a standard CRI was 70+, but now 90+ is standard, with exceptional CRI averaging 95 to 97.
Imagine walking into a retail store to find a vibrant red shirt, but in the changing room, it looks brown. This color discrepancy is due to the low R9 value of the changing room lights. Even with a 90+ CRI rating, the lighting can fail to render colors accurately, highlighting the need for high R9 values for true color representation.
This is crucial because the light source heavily influences our perception of objects. A high CRI value ensures that the colors we see under the light source are as close to their actual appearance as possible, enhancing our visual experience.
Not all 90+ CRI light sources are the same. You can have a high CRI and a low R9 or R12 value. Those specific R values are made up of red and blue. Without higher R9 and R12 values, colors look muted and lifeless.
Part 2 - How CRI is Measured
CRI is measured using a spectrophotometer. The spectrophotometer breaks light up into discrete wavelengths, measures the intensity of each wavelength, compares that data to a reference sunlight spectrum, and then integrates that data into the R values.
Part 3 - Why CRI Matters
CRI enhances color representation and visual comfort, improving lighting quality in various settings.
Accurate color rendering helps customers make informed decisions, enhancing satisfaction and potentially boosting sales.
Good CRI performance elevates color rendering, contributing to a better visual experience.
That is Why CRI Matters.
