4.5.1 Exposure Setting
The Exposure pull-down menu is shown as follows:
The exposure is the amount of light received by the image sensor and is determined by the width of
lens diaphragm opening (iris adjustment), the amount of exposure by the sensor (shutter speed) and
other exposure parameters. With this item, users can define how the Auto Exposure function works.
Each exposure mode is specified as follows:
Full Auto Mode
In this mode, the camera’s Shutter Speed, IRIS and AGC (Auto Gain Control) control circuits work
together automatically to get consistent video output level. The maximum shutter speed is adjustable
from 1/30 to 1 sec.
Fixed Shutter Mode
In this mode, fixed shutter speed could be selected from the dropdown menu. The shutter speed range
is from 1/10000 to 1 sec. with 19 options. Users could select suitable shutter speed according to the
environmental illumination.
4.5.2 White Balance Setting
The White Balance pull-down menu is shown as follows:
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.
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50
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