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Gamut area index (GAI) is a good indicator of color saturation. A light source with high GAI shows good color discrimination, saturation, and vividness. Choosing a source with high CRI (85 or greater) and a high GAI (80-100) is better. However, GAI higher than 100 might be saturated.



The calculations of Gamut Area,
the blue area means standard reference,
and the red area means the measured value.

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【Lighting Knowledge】GAI
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