Polycom G7500 Administrator's Manual page 84

Setting
White Balance
Brightness
Color Saturation
Polycom, Inc.
Configuring Video and Camera Settings
Description
Specifies how the camera compensates for light
source variations in the room. Select Auto,
Manual, or a color temperature value.
▪ Auto: Polycom recommends this setting for
most situations. It calculates the best white
balance setting based on lighting conditions in
the room.
▪ Manual: Use this setting for rooms where the
Auto and fixed values don't provide acceptable
color reproduction.
When you set this option to Manual, fill the
camera's field of view with a flat white object,
such as a piece of paper. For best results, the
object should be uniformly illuminated with light
that is representative of the room lighting used
in the conference, rather than light from a
display, another area, or a shadow. After the
object is in place, select Calibrate.
▪ Color Temperature Value: The color
temperature values, measured in degrees
Kelvin, correspond to the color of ambient light
in a room. Because the available color
temperature values vary by camera, this list is a
sampling of some of the values you might see
in the interface:
◦ 3200K (warm office fluorescent)
◦ 3680K (tungsten bulb)
◦ 4160K (cool office fluorescent)
◦ 5120K (neutral daylight)
◦ 5600K (cool daylight)
Adjusts the video brightness.
Adjusts the color saturation.
82