TLCI
The Television Lighting Consistency Index, a scoring system that evaluates a light source using a model of a camera's response rather than the eye's.
Measured in
Qa score
In depth
Because cameras and eyes have different spectral sensitivities, a source can look fine to a person and still record badly. TLCI was developed by broadcast engineers to close that gap, scoring how much correction a colourist would need to apply. It is the more relevant number when buying lights for photography and video.
Examples in practice
A fixture rated CRI 92 but TLCI 74 will need noticeable colour correction in post even though it looks clean to the eye.