NCIDQ IDFX Practice Exam

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What does CRI stand for in the context of light quality?

Color Ranking Index
Color Rendering Index
Color Rating Indicator
Color Response Index

The correct answer is: Color Rendering Index

In the context of light quality, CRI stands for Color Rendering Index. This is a measure used to evaluate how accurately a light source displays colors in comparison to a natural light source, such as daylight. The CRI scale ranges from 0 to 100, with higher values indicating better color rendition. A light source with a CRI of 100 renders colors as they would appear under natural sunlight, allowing for true color recognition. Understanding CRI is crucial for interior designers and lighting professionals since it impacts how colors of materials and finishes appear within a space. High CRI lighting is especially important in settings where color precision is necessary, such as in art galleries or retail environments, where the accurate representation of products is essential.