RCA LDK 8000 manual Colour temperature selection, Selecting the colour temperature

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.

LDK 8000 HDTV camera system User’s Guide (v3.0) 55