Critical color assessments with standardized D50 and D65 requires luminaires that emit high-quality, CIE and ISO standards-compliant light. Specifically, the spectral values, color rendering indices, chromaticity coordinates and metamerism indices must be achieved and maintained with very low tolerances to reliably "communicate color" anywhere in the world. Even small changes in the light spectrum greatly influence the color impression and thus the intended final product quality.
JUST Digital Light Systems simulate the spectral distribution of standard light D50 and D65 so well that the specifications for visual color assessment according to ISO 3664 and ISO 3668 are not only met, but are significantly exceeded. This means less variability in your color workflow.
In addition, it is possible to turn off the UV component required by the current ISO standard - to create conditions more similar to daylight - if necessary. This means that media producers have a solution compatible to both the previous ISO 3664:2000, and current ISO 3664:2009 standards.
With the new UV-ONLY function (UV-A), optical brighteners, specialty inks, security features, adhesives or other fluorescent materials can be detected even better.
(Source from Just-normlicht )