Apart from CRI, R-values and CQS, color consistency is also a measure of the quality of light. The color consistency can be evaluated at several levels as follows:
- Consistency over time: Color shifts over the life time of LEDs.
- Consistency between different products and batches: Color tone variations from batch to batch.
- Consistency across the beam of light: Color shift across the beam of the LEDs.
- Consistency between color specification in the datasheet and that seen when the LED is used.