Colour Temperature Selection; Auto-White Balance - THOMSON LDK 20 S Operator's Manual

Colour temperature selection

For true colour reproduction the ambient lighting
conditions must be compensated for by selecting a
value for the colour temperature. The standard file
setting is 3200K (normally used for tungsten light).
Two other reference colour temperatures are available;
5600K (for outdoors, clouded conditions) and 7500K
(for outdoors, clear blue skies). Two similar memory
positions (AW1 and AW2) are available to store the
results of the auto-white measurement process.
The colour temperature is selected via the operate
menu. A list of the five values is displayed in the
viewfinder. The viewfinder display is as follows:
Ctemp
112
The cursor marks the current value. A new value is
chosen by scrolling up or down through the available
values. The selection is made when the arrow is
moved. The display disappears after 1 second when
the button is released.
Shooting
3k2
5k6
7k5
aw1
aw2
1-5
Operator's Manual LDK 20(S) - Studio Camera

Auto-White Balance

If the three reference colour temperatures do not
match your lighting conditions then the auto-white
procedure must be carried out as follows:
a. First select one of the memory positions AW1 or
AW2 in which to store the measured colour
temperature value with the colour temperature up/
down switch.
b. Press the Auto white switch on the rear panel of the
camera to start the automatic white balance
procedure. A window appears in the viewfinder.
Autowh
c. Point the camera to fill the window with a reference
white object.
d. Press the AWB button again to start the actual
automatic white balance measurement procedure.
The Autowh indicator in the viewfinder is now On.
e. When the process is completed (within a few
seconds) the Autowh indicator in the viewfinder
changes to Off. The measured colour temperature
is now stored in the selected memory position and
can be recalled as required. The camera is now
ready for use.
Iris is set to 90% during the auto-white process
and knee is turned off automatically.
Win
Note
5-5