My most recent contribution to ELECTRICAL CONTRACTOR provides an update on the TM-30 color evaluation method, which turned five this year.
With the proliferation of LED lighting, previously accepted flaws in the CRI metric became accentuated. With LED, you can have two products with the same CRI but very different color-rendering abilities. In other words, different effects on finishes, furnishings and flesh tones. To address this, in 2015, the Illuminating Engineering Society in New York produced TM-30, “IES Method for Evaluating Light Source Color Rendition,” a proposed method for color evaluation. The idea behind this method was more information and greater accuracy.
Click here to check it out.