Nikon 25492, Справочное руководство

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The Shooting Menu
White balance can be selected using the White balance option in
the shooting menu ( 0 127), which also can be used to fine-tune
white balance (
0
71) or measure a value for preset white balance
( 0 72).
The I Fluorescent option in the White balance menu can be used
to select the light source from the bulb types shown at right.
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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
wavelengths. While light sources with a color temperature in the neighborhood of 5,000–
5,500 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:
•
I
(sodium-vapor lamps): 2,700 K
• J (incandescent)/
I
(warm-white fluorescent): 3,000 K
• I (white fluorescent):
3,700 K
•
I
(cool-white fluorescent): 4,200 K
•
I
(day white fluorescent): 5,000 K
•
H
(direct sunlight): 5,200 K
• N (flash):
5,400 K
•
G
(cloudy): 6,000 K
• I (daylight fluorescent):
6,500 K
•
I
(high temp. mercury-vapor): 7,200 K
•
M
(shade): 8,000 K
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The Fn Button
For information on using the Fn button and the command dial to select a white balance
option, see page 143.