Nikon D3100 2 manual Color Temperature, Cool-white fl ,200 K

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AThe Shooting Menu

White balance can be selected using the White balance option in the shooting menu (0 131), which also can be used to fine-tune white balance (0 89) or measure a value for preset white balance (0 90).

The I Fluorescent option in the White balance menu can be used to select the light source from the bulb types shown at right.

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 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	•	H (direct sunlight): 5,200 K
• J (incandescent)/	•	N (flash): 5,400 K
I (warm-white fl.): 3,000 K	•	G (cloudy): 6,000 K
• I (white fluorescent): 3,700 K	•	I (daylight fluorescent): 6,500 K
• I (cool-white fl.): 4,200 K	• I (mercury-vapor lamps): 7,200 K
• I (day white fluorescent): 5,000 K	•	M (shade): 8,000 K

AThe Fn Button

For information on using the Fn button and the command dial for white balance, see page 146.

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