värviesitusindeks
Värviesitusindeks, often abbreviated as CRI or Ra, is a quantitative measure of a light source's ability to reveal the colors of various objects faithfully compared to a natural light source. It is a scale from 0 to 100, where a CRI of 100 indicates that the light source renders colors identically to a natural light source, such as the sun. A lower CRI value suggests that the light source is less effective at accurately reproducing colors.
The CRI is determined by comparing the spectral power distribution of the light source in question to
Different applications have different CRI requirements. For general indoor lighting, a CRI of 80 or above is