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LDK 8000 HDTV camera system User’s Guide (v3.0) 55
Chapter 5 - Operating instructions
5.7.5 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 and indoor lighting). Two other reference colour temperatures are available: 5600K
(for outdoors, clouded conditions) and 7500K (for outdoors, clear blue skies).
The memory positions (FL50, FL60, AW1 and AW2) are available to store the results of the
auto-white measurement process. The memory positions are filled with measured values
using the automatic white balance switch at the front. The FL positions are recommended for
shooting with fluorescent light.
A continuous automatic white balance position (AWC) is also available. This function
continuously measures the white balance and adjusts accordingly. It can be used when a
constant colour balance is required under changing lighting temperatures (sunsets, indoors/
outdoors use).
In the auto-white positions an electronic colour filter can be adjusted in the VIDEO menu. This
varies the colour balance to obtain warmer or colder colour effects. When an automatic white
balance process is performed, the electronic colour filter is reset to its default value.
Selecting the colour temperature
The up/down Colour temperature switch on the left-front side of the camera allows a choice
between:
Three preset colour temperatures:
– 3200K (3.2K) - for indoor lighting conditions
– 5600K (5.6K) - for outdoors, clouded conditions
– 7500K (7.5K) - for outdoors, clear blue skies
Four memory positions:
– FL50 - memory position for 50Hz fluorescent light (matrix is set to CoolFL and
exposure to 50Hz.)
– FL60 - memory position for 60Hz fluorescent light (matrix is set to CoolFL and
exposure to 60Hz.)
– AW1 - memory position 1
– AW2 - memory position 2
An automatic continuous white position:
– AWC - continuous measurement (2500K to 20000K)
When the switch is first pressed, the viewfinder displays the current value.
Select a new value by scrolling up or down through the available values.
The Colour temperature indicators in the viewfinder light to show which position is selected.
None of these indicators light when AWC is selected, but the Non-standard indicator lights.
The viewfinder also displays the actual value of a measured colour temperature. The range of
the auto-white balance is from 2500K to 20000K.