123
P, S, A, and M Modes
A
The Shooting Menu
White balance can be selected using the
White balance
option in the shooting
menu (
190), which also can be used to
fine-tune white balance (
measure a value for preset white balance
(
126).
The
I
Fluorescent
option in the
White
balance
menu can be used to select the
light source from the bulb types shown at
right.
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
•
J
(incandescent)/
I
(warm-white fluorescent):
3000 K
•
I
(white fluorescent):
3700 K
•
I
(cool-white fluorescent):
4200 K
•
I
(day white fluorescent):
5000 K
•
H
(direct sunlight):
5200 K
•
N
(flash):
5400 K
•
G
(cloudy):
6000 K
•
I
(daylight fluorescent):
6500 K
•
I
(high temp. mercury-vapor):
7200 K
•
M
(shade):
8000 K
