51
Taking Photographs—White Balance
The
WB
Button
When the monitor is off, white balance can be
fi ne tuned by pressing the
WB
button and rotating
the sub-command dial.
Fine-Tuning and Color Temperature
Approximate color-temperatures for settings other than
A
(auto) are given below (val-
ues may differ from color temperatures given by pho to color meters):
+3
2,700 K
2,700 K
4,800 K
4,800 K
5,400 K
6,700 K
Shade
(daylight)
Cloudy
(daylight)
Direct
sunlight
Flash
Fluorescent
*
Incandescent
+2
2,800 K
3,000 K
4,900 K
5,000 K
5,600 K
7,100 K
+1
2,900 K
3,700 K
5,000 K
5,200 K
5,800 K
7,500 K
±0
3,000 K
4,200 K
5,200 K
5,400 K
6,000 K
8,000 K
–1
3,100 K
5,000 K
5,300 K
5,600 K
6,200 K
8,400 K
–2
3,200 K
6,500 K
5,400 K
5,800 K
6,400 K
8,800 K
–3
3,300 K
7,200 K
5,600 K
6,000 K
6,600 K
9,200 K
* The size of the increments for
Fluorescent
refl ects the wide variations in color tem-
per a ture among the many different types of fl uorescent light source, ranging from
low-tem per a ture sta di um lighting to high-temperature mer cu ry-vapor lamps.
“Mired”
Any given change in color temperature produces a greater difference in color at low
color tem per a tures than it would at higher color temperatures. For example, a change
of 1000 K produces a much greater change in color at 3000 K than at 6000 K. Mired,
calculated by multiplying the inverse of the color temperature by 10
6
, is a measure of
color temperature that takes such variation into account, and as such is the unit used
in color-temperature compensation fi lters. E.g.:
• 4000 K – 3000 K (a difference of 1000 K) = 83 mired
• 7000 K – 6000 K (a difference of 1000 K) = 24 mired
