9
3.
Functions
Set each function by the OSD menu.
3.1.
EXPOSURE
3.1.1.
AE MODE
Set control method of shutter, slow shutter, gain and DC iris lens.
Default: AUTO
AUTO
Automatically control the shutter speed (including SENS UP), gain and DC iris lens
in accordance with the brightness of the subject.
When a bright subject is imaged, lower the brightness to the target value by the
shutter speed and DC iris lens.
When a dark subject is imaged, heighten the brightness to the target value by the
gain and slow shutter.
The max. and min. of the shutter speed is changed in accordance with the CVBS
Format(Table 1). The longer max. shutter speed, the higher sensitivity for the
subject in the dark, but the video resolution will be lowered.
See “3.1.7.” for the DC iris lens and “3.1.5.” for the slow shutter.
Figure 5. AE = AUTO Behavior
(When slow shutter x2 or more, DC IRIS MODE = AUTO)
Dark
Bright
Brightness of
the subject
Slow-shutter
(SENS UP)
Gain
DC-iris
Shutter
