Black BLK-PTZ12X Guía de instalación descargar pdf (Pagina 139)

User Manual

137

3.5.9 Camera—WB Mode

A camera needs to find reference color temperature, which is a way of

measuring the quality of a light source, for calculating all the other colors. The

unit for measuring this ratio is in degree Kelvin (K). Users can select one of the

White Balance Control modes according to the operating environment. The

following table shows the color temperature of some light sources for reference.

Light Sources

Color Temperature in K

Cloudy Sky

6,000 to 8,000

Noon Sun and Clear Sky

6,500

Household Lighting

2,500 to 3,000

75-watt Bulb

2,820

Candle Flame

1,200 to 1,500

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Black BLK-PTZ12X Guía de instalación Pagina 139