HID Colour temperature

[jptaylor9]

What should you read into the colour temperature that's quoted for a HID?

How does 4200K compare to 6000 K? It's a bigger number, but is that good or bad?

JT

[EDIT] Found this after a google search:

HID-Online.com - What is colour temperature?</title>
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[Lou]

The bigger the numbe, the whiter (bluer) the light. Sunlight is 6500K, the further away you get from that in lower temps it gets more yellow.

For HID you wuld expect more like 5000-6500K

Here is a useful list from a Google search

Source Color temperature
in kelvin
Skylight (blue sky) 12,000 - 20,000
Average summer shade 8000
Light summer shade 7100
Typical summer light (sun + sky) 6500
Daylight fluorescent (caution!) 6300
Xenon short-arc 6400
Overcast sky 6000
Clear mercury lamp 5900
Sunlight (noon, summer, mid-latitudes) 5400
Design white fluorescent 5200
Special fluorescents used for color evaluation 5000
Daylight photoflood 4800 - 5000
Sunlight (early morning and late afternoon) 4300
Brite White Deluxe Mercury lamp 4000
Sunlight (1 hour after dawn) 3500
Cool white fluorescent (caution!) 3400
Photoflood 3400
Professional tungsten photographic lights 3200
100-watt tungsten halogen 3000
Deluxe Warm White fluorescent 2950
100-watt incandescent 2870
40-watt incandescent 2500
High-pressure sodium light 2100
Sunlight (sunrise or sunset) 2000
Candle flame 1850 - 1900
Match flame 1700

[Mark Chase]

Have you read the article I put a link to on the Everything you always wanted to know about HID thread ?

Its very informatave

ATB

Mark CHase