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Nov 25 2008, 11:28 AM
For case 2, I know what he asking for. He ask for the light color (or called color temperature).
Here are some color temperature sample.
QUOTE
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 fluorescent 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
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 fluorescent 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
Very easy, sample is the florescent light (lampu panjang), there is 3 type of color temperature available (for white color type),
Tri-Phosphor tubes
Numeric Color Code Color Approximate Color Rendition Index Color Temperature (K)
827 Warm White ~85 2700
840 Cool White ~85 4000
865 Cool Daylight ~85 6500
More details here:
http://www.ruhanirabin.com/color-temperature-of-h4-bulbs/
http://www.3drender.com/glossary/colortemp.htm
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