Sony 370PL - Manual (Page 128)

128
Chapter 5 Adjustments and Settings
Chapter 5 Adjustments and Settings
Light Sources and Color
Temperature
Adjustment of the white balance to match the light
source is essential to ensure correct color rendering.
The color of a light source is indicated as a color
temperature in kelvins (K). It is higher for bluish light,
and lower for reddish light. When the camcorder is
shipped it is adjusted for use with video lights (studio
lamps with a color temperature of 3200 K). For use
with other light sources, therefore, adjustment is
required.
First use the FILTER control to set the approximate
color temperature, then carry out white balance
adjustment.
The following table shows typical color temperature
values for different light sources.
Color temperatures of different light sources
Light source
Natural Artificial
Color temperature (K)
Clear sky 10,000
Light cloud 8,000
Cloudy or rainy
skies Blue light 7,000
6,000
Fluorescent light
(daylight white) 5,000
Direct sunlight,
noon Mercury lighting
Fluorescent light
(white) White light
One hour after
sunrise or
before sunset
Fluorescent light
(warm white) 4,000
3,500
Studio lighting 3,200
Halogen lamps
and video lights Yellow light 3,000
2,500
Thirty minutes
after sunrise or
before sunset Incandescent
lighting
Sodium street-
lighting
Sunrise or
sunset Candlelight Red light 2,000
M
M
m
M
m
M
m
Using the ATW (Auto Tracing
White Balance) Function
The ATW function continuously adjusts the white
balance automatically to adapt to changes in lighting
conditions.
Note
Depending on the shooting conditions, automatic
adjustment may not necessarily give optimum results.
For the best possible results, use the W. BAL switch.
To use the ATW function
Press the ATW button turning the indicator on.
This activates the ATW function, and the ATW
indication appears in the viewfinder.
To disable the ATW function, press the ATW button
again, turning the indicator off.
If the ATW function does not operate correctly
A warning message appears in the viewfinder as
shown in the table below.
White Balance Adjustment
Message Meaning and correction to be made
:C.TEMP.LOW If the FILTER control is in position 2, 3 or
4, change it to position 1, then retry the
ATW operation.
:C.TEMP.HIGH If the FILTER control is in position 1,
change it to position 2, 3 or 4, then retry
the ATW operation.