In 2016 I wrote a paper for Thorn Lighting which turned into Masterclass for the Society of Light and Lighting. It was based around getting the balance of light in a space right before you added worries of Human Centric lighting as it was being called then.
There’s a lot of talk about colour rendering and colour temperature, and it seems mostly about what the truth applied to LED.
Should it be R using the 8 sample scale (R8), or R using the 14 colour scale (some call this R14)? Doesn’t Ra of 100 compare to daylight, or is it tungsten? Does LED even tell the truth with colour rendering and isn’t there a better method?
Listen to all the hype, even as an expert and it all gets a little confusing. Then add colour temperature and efficiency and well, we might as all well retire down the bar for a glass of Rioja until we can reach a conclusion.
But there is a lot of talk about little differences. In the LED race to get better colour, we have perhaps forgotten the eyes ability to see, or the brains ability to interpret, both of which are more about perception than absolute measures. Continue reading “Colouring your thoughts”