CRI in i1Share - What is This?

CRI stands for Color Rendering Index. The CRI indicates how closely a measured light source compares to a standard light source in terms of color temperature and spectral distribution.

The calculation of the CRI is standardized by the CIE. i1Share lets you know how the CRI for your individual measured light source (e.g. of a light box) compares to a standard light source. A value of 100% is best. A value in the green range is good.

Be aware that you could have, for instance, two light sources of 5000K, but with different spectral curves. When judging a color under two light sources with same temperature but different spectral curves, the colors may appear different.