74
IP Camera Web Client
Auto Exposure
The Auto Exposure settings allow the user to access and configure exposure-related
settings as described in
Note
You must click
Apply
after you make changes to any settings to save those
changes. Settings are not saved unless you click
Apply
.
Table 4-10
Auto Exposure Settings
Setting
Options
Description
ELC (Electronic Light
Compensation)
Level 1–25
For ELC, the lens iris is fully open at all times and brightness is achieved
by controlling the electronic shutter. Select an ELC level to attain the
desired scene brightness. ELC is recommended for outdoor scenes.
ALC (Automatic Light
Compensation)
(HD3MDIH(X) and
HD3HDIH(X) only)
DC Iris Level: 1–25 For ALC, the shutter speed is constant and brightness is controlled
through the lens iris by opening or closing it.
Adjust the ALC level to the appropriate value so that the image is
correctly exposed (neither too bright nor too dark). This is
recommended for indoor scenes, especially under fluorescent light.
AGC (Automatic Gain
Control)
Off, 20 dB–40 dB
Adjust the maximum value of AGC gain. AGC can be
Off
, or set to
20 dB
,
30 dB
, or
40 dB
.
Note
As AGC levels are reduced, the threshold ranges for DayToNight
and NightToDay are decreased.
DNR (Digital Noise
Reduction)
Off, Auto, Fixed
Improves picture performance in low light by reducing video noise.
DNR will remove video noise, but will also soften the image.
Off
- DNR is turned off.
Auto
- DNR is automatically controlled by the firmware according to
changes in the lighting condition.
Fixed
- DNR is manually set to the highest value regardless of changes
in the lighting condition. You will get the least video noise (dots), but the
softest image.
DNR is deactivated if AGC is turned Off.
Flickerless
(HD3MDIH(X) and
HD3HDIH(X) only)
Off, On
Eliminates the “flicker” that can appear in an image under certain
lighting conditions (for example, fluorescent lighting). This setting is not
available if you have selected ELC.
DSS
(Digital Slow Shutter)
Off, Low, High
Automatically provides a clear image under low-light conditions. DSS
improves the scene brightness. Motion blur might be introduced; this is
scene dependent.
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