Auto Exposure; Table 4-10 Auto Exposure Settings - Honeywell HD3HDIH User Manual

IP Camera Web Client

Auto Exposure

Setting Options
ELC (Electronic Light Level 1–25
Compensation)
ALC (Automatic Light DC Iris Level: 1–25 For ALC, the shutter speed is constant and brightness is controlled
Compensation)
(HD3MDIH(X) and
HD3HDIH(X) only)
AGC (Automatic Gain Off, 20 dB–40 dB
Control)
DNR (Digital Noise Off, Auto, Fixed
Reduction)
Flickerless Off, On
(HD3MDIH(X) and
HD3HDIH(X) only)
DSS Off, Low, High
(Digital Slow Shutter)
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The Auto Exposure settings allow the user to access and configure exposure-related
settings as described in Table
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
Description
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.
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.
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.
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.
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.
Automatically provides a clear image under low-light conditions. DSS
improves the scene brightness. Motion blur might be introduced; this is
scene dependent.
4-10.