Quote:
Originally Posted by johnlvs2run
The two most important criteria for full spectrum lighting are the CRI (color rendering index, and the color temperature rating, measured in Kelvin degrees. The CRI rating goes from 1 to 100, the closer to 100, the more true the colors. A Kelvin rating of 5000 or higher produces a high number of Scotopic lumens (amount of light registered by the rods of the human eye and also controls pupil size). Noon sunlight is generally around 5600 Kelvin, and 5000 Kelvin or higher light vies the appearance of substantially more light.
Halogen bulbs ~ 3200 K and 100 CRI
LED lights ~ 6000 K (posted by RedDevil) and 70 to 90+ CRI
As the lights posted by RedDevil are 6000 K, I would imagine their CRI is close to 100 as well.
I've been using LED lights in my home for years, used full spectrum before that, and the LED lights are better.
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Accurate and good information.........
But........
And this is REALLY important.
The housing used to reflect the light (the shiny chrome thing) in a home IS NOT regulated by the federal government for proper refraction.
THe auto headlamp is.
So two things are happening.
1. THe hot spot created by the different light sources are different AND in different spots on the bulb.
2. this is why 'more' light is not necessarily better for a car headlamp.