Nikon D70s, Руководство пользователя

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Taking Photographs—White Balance
Fine-Tuning White Balance
At settings other than Preset , white bal ance can be “fi ne tuned” to compen-
sate for vari a tions in the color of the light source or to in tro duce a deliberate
“warm” or “cold” cast into an image. Higher settings can be used to lend
im ag es a blu ish tinge or to com pen sate for light sources with a yellow or red
cast, while low er ing white bal ance can make pho to graphs ap pear slight ly
more yellow or red or com pen sate for light sources with a blue cast. Adjust-
ments can be made in the range +3 to –3 in in cre ments of one. Except in
Fluorescent mode, each in cre ment is equiv a lent to about 10 mired.
White balance is fi ne tuned using the White bal. option in the shooting
menu or by pressing the WB button and rotating the sub-command dial. At
settings other than ±0, a icon appears in the control panel.
The White Balance Menu
1
In the white balance menu ( 49), highlight
an option other than Preset and press the
multi selector to the right.
2
Press the multi selector up or down to choose
the desired value and press the multi selector
to the right. The shooting menu will be dis-
played.
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, defi ned with ref-
er ence 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 neigh-
bor hood of 5,000–5,500 K appear white, light sources with a lower color tem per a ture,
such as incandescent light bulbs, appear slightly yellow or red. Light sourc es with a
higher color temperature appear tinged with blue.