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D
Auto 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 (0 213; the default is 1 minute).
D
Preset 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 (073).
A
Color 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 5000–5500 K 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: 2700 K
• J (incandescent)/
Warm-white fluorescent: 3000 K
• White fluorescent: 3700 K
• I (cool-white fluorescent): 4200 K
• Day white fluorescent: 5000 K
• H (direct sunlight): 5200 K
• N (flash): 5400 K
• G (cloudy): 6000 K
• Daylight fluorescent: 6500 K
• Mercury-vapor lamps: 7200 K
• M (shade): 8000 K