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| Color temperature | ||||||||||||||||||||||||||||||
| Date:2015-4-28 | ||||||||||||||||||||||||||||||
The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of comparable hue to that of the light source. In practice, color temperature can only reflect the color ranged from white to yellow to red, which is limited by the radiation of black body.
Color temperature (CCT) is conventionally stated in the unit of absolute temperature, the Kelvin, having the unit symbol K.
The lower color temperature is the yellowish white through red, create a warm and relax atmosphere, the higher is the cool white to bluish white, it enhance the tension and make people concentrate but can be tired easily.
The color temperatures of light sources accordingly are listed as below chart:
Temperature
Source
1,700 K
Match
flame, low pressure sodium lamps (LPS/SOX)
1,850 K
Candle
flame, sunset/sunrise
2,700每3,300 K
Incandescent
lamps
3,000 K
Soft
(or Warm) White compact fluorescent lamps
3,200 K
Studio
lamps, photofloods, etc.
3,350 K
Studio
"CP" light
4,100每4,150 K
Moonlight
5,000 K
Horizon
daylight
5,000 K
Tubular
fluorescent lamps or
cool
white/daylight compact fluorescent lamps (CFL)
5,500每6,000 K
Vertical
daylight, electronic flash
6,200 K
Xenon
short-arc lamp
6,500 K
Daylight,
overcast
6,500每10,500 K
LCD
or CRT screen
15,000每27,000 K
Clear
blue poleward sky
Source from Wikipedia. |
