What belongs in a light-measurement report
CCT describes a white-light chromaticity relationship; it does not describe the entire spectrum or color-rendering behavior.
Read the guideThe reading room
Original guides and source-based assessments. Practical context without fabricated results.
A starting list for spectral light measurements
The order is an editorial route through documented options, not a measured quality ranking.
Read the guideANSI/IES LM-79-24 — Scope and starting point
Optical and electrical measurement of solid-state lighting products..
Read the guideCIE S 025/E:2015 — Scope and starting point
Reproducible photometric and colorimetric measurements of LED lamps, luminaires and modules; LED packages are outside this document’s scope..
Read the guideCL-700A: a source note on the expanded spectral range
Konica Minolta announced CL-700A on 5 December 2025.
Read the guide