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DAuto Power Off
White balance measurement will end without a new value being
acquired if no operations are performed for the time selected for Auto
power off in the setup menu (0162; the default is 1 minute).
DPreset White Balance
The camera can store only one value for preset white balance at a time;
the existing value will be replaced when a new value is measured. Note
that exposure is automatically increased by 1EV when measuring
white balance; in mode w, adjust exposure so that the exposure indica-
tor shows ±0 (037).
AColor Temperature
The perceived color of a light source varies with the viewer and other
conditions. Color temperature is an objective measure of the color of a
light source, defined with reference to the temperature to which an
object would have to be heated to radiate light in the same wave-
lengths. While light sources with a color temperature in the neighbor-
hood of 5000–5500K appear white, light sources with a lower color
temperature, such as incandescent light bulbs, appear slightly yellow
or red. Light sources with a higher color temperature appear tinged
with blue. The camera white balance options are adapted to the follow-
ing color temperatures (all figures are approximate):
Sodium-vapor lamps: 2700K
J (incandescent)/
Warm-white fluorescent: 3000K
White fluorescent: 3700K
I Cool-white fluorescent: 4200K
Day white fluorescent: 5000K
H (direct sunlight): 5200K
N (flash): 5400K
G (cloudy): 6000K
Daylight fluorescent: 6500K
Mercury-vapor lamps: 7200K
M (shade): 8000K