CRI is often expressed on a 1-100 scale where 100 represents natural sunlight or incandescent lighting. Typically, the higher the CRI rating on a light source (such as an LED or fluorescent bulb) is, the better its ability to render colors accurately. CRI reflects two major properties of lighting: color rendition and degree of whiteness/coloring. A high CRI number is like a high grade point average for color quality. While most LEDs score in the 80s (a solid B average), both the Cree TW Series and the GE Reveal LEDs score in the 90s LED lighting with a high CRI rating of 90 or higher. LEDs can mimic the hue and intensity of natural sunlight and help to maintain the human body’s natural circadian rhythm because LED components allow for finer adjustments of color, brightness and intensity. Many of the best ring lights we’ve tested are either now discontinued or have recurring stock issues. This includes the Neewer 14-inch LED Ring Light (RL-14), Neewer 16-inch LED Ring Light (RL After further testing, we’ve added the Koncept Z-Bar Mini Desk Lamp, the Gantri Gallery Task Light, and the Schoolhouse Joe Task Lamp to our list of recommended lamps. We also added the IKEA Top Features and Benefits: High CRI up to 97 and TLCI up to 99+. Low energy consumption of 1.5 Watts/ft. Low output up to 132 lm/ft (434 lm/m) Available in 24V input. Fully dimmable. Can be used to comply with Title 24 JA8. 50,000 hour lifespan (8 hours/day for 17 years) The effect of a light source on color appearance is measured in the color rendering index (CRI), on a scale of 0-100. Natural outdoor light has a CRI of 100 and is used as the standard of comparison for any other light source. The CRI of Philips LED lighting products is always higher than 80, close to natural light. CRI stands for colour rendering index. This is a scale that was developed to measure how colours look under artificial light, as opposed to natural sunlight. The scale ranges from 0 to 100, with 0 meaning the light doesn't show colours matching sunlight. At the opposite end of the scale, a 100 means under the artificial light, the hue looks The color rendering is expressed as the Color Rendering Index or short CRI. The scale goes from 0 to 100. A 2700K incandescent light bulb has a CRI of 100. A value of above 80 is with current LED technology considered a good CRI and will be sufficient for most applications. However, for some areas, better color rendering of 90 or above can be The Spectral Similarity Index, or SSI, addresses issues with existing indices such as the Color Rendering Index (CRI) and the Television Lighting Consistency Index (TLCI) that make them inappropriate to describe lighting for digital cinema cameras -- issues that have become more evident with the emergence of solid-state lighting (SSL) sources hAKd.