ACTi A950 - White Balance

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2.4.2 White Balance
The White Balance setting can be found under this path: Camera> White
Balance.
A camera needs to find reference color temperature, which is a way of
measuring the quality of a light source, for calculating all the other colors. The
unit for measuring this ratio is in degree Kelvin (K). Users can select one of the
White Balance Control modes according to the operating environment. The
following table shows the color temperature of some light sources for reference.
Light Sources
Color Temperature in K
Cloudy Sky
6,000 to 8,000
Noon Sun and Clear Sky
6,500
Household Lighting
2,500 to 3,000
75-watt Bulb
2,820
Candle Flame
1,200 to 1,500
AWB.normal
The AWB (Auto White Balance).normal mode is suitable for environments
with light source having color temperature in the range roughly from 2700K to
7800K.
AWB.wide
With AWB (Auto White Balance).wide function, the white balance in a scene
will be automatically adjusted while temperature color is changing. The ATW
Mode is suitable for environments with light source having color temperature in
the range roughly from 2500K to 10000K.
AWB.all
The AWB (Auto White Balance).all mode is suitable for environments with light
source having color temperature under 2500K or over 10000K.
Smart Mode
The Smart mode is suitable for environments with one single background color
which is strongly saturated, for instance, in a forest.