The Colour Rendering Index (CRI) is an international system used to rate a light sources ability to accurately render an objects colours, when compared to the sun. The higher the CRI (based upon a 0-100 scale) the richer colours appear. CRI ratings of various LED modules may be compared, but a numerical comparison is only valid if the modules are close in colour temperature. CRI differences among LED modules are not usually significant (visible to the eye) unless the difference is more than 3-5 points.

High colour rendering is particularly important in retail applications to ensure that merchandise appears vibrant and appealing, ultimately help increase demand and sales.

Gamma has developed an extensive range of retail products that offer high colour rendering:

Jingo – contemporary track spotlights

Lingo – high performance track spotlights

Gyro – scoop and gimbals

Fame – high performance framelights