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 and while balance adjustment (reference)
When carbon is burnt, it develops vari-
ous colors of light depending on the tem-
perature. Natural light can be specified10000K
Blue sky
by color temperature reflecting to the
color developed when carbon is burnt.9000K
Rainy
The light of 3,200K (K=Kelvin, j273!C
equals to absolute zero temperature OK)8000K
Cloudy
represents the same value (color) asAWC
what develops when carbon is burnt at7000KPartly cloudy
3,200K (2,927!C). The relationship be-
tween the color temperature of the light6000K
Fine
source and weather condition is indi-
cated in the right figure. LetOs study theFluorescent lam
5000K
difference of shooting an indoor object
from shooting one outdoors. Studios are4000KHalogen lamp
usually lighted with incandescent lamps
Tangsten lamp
and the color temperature of a white
3000K
object in a studio is around 3,200K. The
color temperature of a white object out-
2000K
doors is around 6,500K. The former may
Candle
look a little yellowish while the latter ap-
1000K
pears somewhat bluish when they are
shot by a camera. However, the human
Color temperature values
eye does not recognize color differences
among these objects even under differ-
ent 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.
NOTE
Color temperature outdoors may vary depending on weather conditions.
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ACEC
