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_ Color temperature and while balance adjustment (reference)
When carbon is burnt, it develops
various colors of light depending on the
temperature. Natural light can be
specified by color temperature reflecting
to the color developed when carbon is
burnt.
The light of 3,200K (K=Kelvin, –273°C
equals to absolute zero temperature 0K)
represents the same value (color) as
what develops when carbon is burnt at
3,200K (2,927°C). The relationship
between the color temperature of the
light source and weather condition is
indicated in the right figure. Let’s study
the difference of shooting an indoor
object from shooting one outdoors.
Studios are usually lighted with
incandescent lamps and the color
temperature of a white object in a studio
is around 3,200K. The color temperature
of a white object outdoors is around
6,500K. The former may look a little
yellowish while the latter appears
somewhat bluish when they are shot by a camera. However, the human eye does not
recognize color differences among these objects even under different ambient lighting
conditions, because of their adaptability to light.
The video camera reproduces color differences with high fidelity and the color of an
object somewhat different from what appears to the human eye.
Therefore, there is a need to adjust the white balance in order to correct differences
between color temperatures.
How to Adjust
_ White balance adjustment
Adjust the white balance after shooting a white object by at least 50% of the screen.
NOTE: If the white signal level is over 100% or less than 50%, the white balance may
not be normally adjusted.
Color temperature outdoors may vary depending on weather conditions.
NOTE
10000K
Blue sky
Rainy
Partly cloudy
Cloudy
AWC
Fine
Fluorescent lamp
Halogen lamp
Tangsten lamp
Candle
9000K
8000K
7000K
6000K
5000K
4000K
3000K
2000K
1000K
Color temperature values