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 (0 213; 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 1 EV when measuring white balance; in mode w, adjust exposure so that the exposure indicator shows ±0 (0 73).

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 neighborhood 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 following color temperatures (all figures are approximate):

• Sodium-vapor lamps: 2700 K

• H(direct sunlight): 5200 K

• J(incandescent)/

• N(flash): 5400 K

Warm-white fluorescent: 3000 K

• G(cloudy): 6000 K

• White fluorescent: 3700 K

• Daylight fluorescent: 6500 K

• I(cool-white fluorescent): 4200 K

• Mercury-vapor lamps: 7200 K

• Day white fluorescent: 5000 K

• M(shade): 8000 K

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