Posts Tagged ‘colour reproduction’

Full-Spectrum light on TV

Monday, October 10th, 2011

Recently Viva-Lite partner – AdLux were interviewed on Finnish TV. We have the video (in Finnish) here and the English translation below. If you’d like to skip ahead to the demonstration of how the colours look under different lights – this starts at 0:50.

 

Lighting designer Ilkka Pekanheimo, Autumn has come and the days become shorter, now would be the right time to buy day light illumination. Why?
(more…)


How accurate is your colour perception

Friday, August 19th, 2011

Our ability to perceive colour in the world around us is a combination of our ambient light quality and the state of the cones in our eyes.

 

These cones in our eyes specialise in perceiving any one of the three different colour groups – red, green or blue. If any group is damaged then we cannot properly perceive that particular colour.

 

(more…)


The Colour Rendering Index (CRI)

Monday, February 15th, 2010

We felt it is high time to write a brief blog article about the so-called “colour rendering index“, or CRI as its abbreviation is called. The CRI is often quoted in “Ra” (general color rendering index).

 

What does Wikipedia have to say about the CRI: “The color rendering index (CRI) (sometimes called color rendition index), is a quantitative measure of the ability of a light source to reproduce the colors of various objects faithfully in comparison with an ideal or natural light source. Light sources with a high CRI are desirable in color-critical applications such as photography and cinematography. It is defined by the International Commission on Illumination as follows: ‘Color rendering: Effect of an illuminant on the color appearance of objects by conscious or subconscious comparison with their color appearance under a reference illuminant’.”

 

As this sounds a wee bit complicated, we’ve prepared an article which (hopefully) explains a bit mor simple what the CRI is and does. (more…)