What is cri90?
CRI values that are 90 and above are considered excellent, while scores below 80 are generally considered poor. (More on this below). Part 2: Color Rendering Index (CRI) is used to measure artificial, white light sources. Light sources can be grouped into either artificial or natural light sources.
What are it considered a good CRI?
Light sources with a CRI of 80 to 90 are usually regarded as "good" and a CRI of 90+ is considered excellent, because the higher the CRI, the better the color rendering capacity. However, a CRI approaching 100 is not necessarily what you should be looking for.
How important is CRI in lighting?
The higher the CRI, the better the artificial light source is at rendering colors accurately. The lower the CRI value, the more unnatural colors appear when illuminated by the light source. Equally important to finishes and hues are how people look in the space.
How is light CRI measured?
So to test the CRI, you set up a number of color patches with precisely known colors on them. You then measure the color of these patches under the light source using a device called a spectrophotometer, which measures the color of the light being reflected from it.