Nikon COOLPIX A900 Reference Manual - Page 111

A The Shooting Menu White balance can be selected using the White balance option in the shooting menu (0 176), which also can be used to fine-tune white balance (0 92) or measure a value for preset white balance (0 94). The Auto option in the White balance menu offers a choice of Normal and Keep warm lighting colors, which preserves the warm colors produced by incandescent lighting, while the I Fluorescent option can be used to select the light source from the bulb types. 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 wavelengths. 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): • I (sodium-vapor lamps): 2700 K • H (direct sunlight): 5200 K • J (incandescent)/ • N (flash): 5400 K I (warm-white fluorescent): • G (cloudy): 6000 K 3000 K • I (daylight fluorescent): 6500 K • I (white fluorescent): 3700 K • I (cool-white fluorescent): r • I (high temp. mercury-vapor): 7200 K 4200 K • M (shade): 8000 K • I (day white fluorescent): 5000 K A See Also For information on using the S (g) button and the command dial to select white balance, see page 194. 91