Showing posts with label LED middle. Show all posts
Showing posts with label LED middle. Show all posts

Wednesday, August 22, 2012

Lighting Quality and CRI

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