User guide

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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 minimum shutter speed range is from 1 to 1/30 sec. (NTSC) and from 1 to
1/25 sec. (PAL) with 6 options. Users could select suitable shutter speed
according to the environmental illumination.
NOTE: The minimum shutter speed set in the Full Auto Mode will be
applied to Full Auto Flickerless Mode and Auto Iris Mode.
Full Auto Flickerless Mode
Television scanning (PAL & NTSC) and power supply systems (AC 50 & 60 Hz)
are not the same in different countries and regions. Users might find flickering
situation displayed on the screens because the devices are working under
different frequency systems. With Auto Flickerless function, users could reduce
the symptom.