CRI stands for Colour Rendering Index which is the objective scale used to represent light quality. It represents the ability of a light source to faithfully reproduce the various colours of an object in comparison to natural sunlight.
Sunlight has a CRI of 100, halogen & incandescent rate highly at >90CRI whilst fluorescent rates poorly >70CRI. When it comes to LED there can be big differences in CRI. A quality LED lamp will have a CRI >90, then there is the poor quality LED which can be 50-60CRI, which unfortunately you won’t discover till you install them.
The images below are examples of the CRI difference between quality & cheap LED. Daylight is top, a good quality LED middle & a poor quality LED bottom. The poor quality LED shows us a dull & lifeless view of the object whilst the good quality LED gives us an accurate view & is hard to distinguish from the daylight.
Can you can imagine how a low CRI light would make your home look!
This article is come from: http://lightings-led.com/blog/?p=23
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