VIVOTEK
70 - User's Manual
Enable WDR enhanced: This function allows users to identify more image details with an extreme
contrast from an object of interest with one shadowed side against a bright background, e.g., an
entrance. You may select the
Enable WDR enhanced
checkbox, and then adjust the strength (low,
medium, high) to reach the best image quality.
■
AE Speed Adjustment
:
This function applies when you need to monitor fast changing lighting conditions. For example,
the camera may need to monitor a highway lane or entrance of a parking area at night where
cars passing by with their lights on can bring fast changes in light levels. The same applies if
the camera is installed on a vehicle, and when it needs to adapt to fast changes of light when
entering and leaving a tunnel.
Exposure control:
■
Exposure level
: You can manually set the Exposure level, which ranges from -2.0 to +2.0 (dark
to bright). You can click and drag the semi-circular pointers on the
Exposure time
and
Gain
control
slide bars to specify a range of shutter time and Gain control values within which the
camera can automatically tune to an optimal imaging result. You may prefer a shorter shutter
time to better capture moving objects, while a faster shutter reduces light and needs to be
compensated by electrical brightness gains.
■
Exposure mode:
You can click and drag the semi-circular pointers on the
Exposure time
and
Gain control
slide
bars to specify a range of shutter time and Gain control values within which the camera can
automaticallly tune to an optimal imaging result. You can also configure the iris size to control
the amount of light. For example, you may prefer a shorter shutter time to better capture moving
objects, while a faster shutter reduces light and needs to be compensated by electrical brightness
gains.
Auto
: If you set Exposure mode as
Auto
, the Exposure time and Gain control will not be
configurable since the sensor library will automatically adjust the value according to the ambient
light. Then you can configure iris mode as “indoor” or “outdoor” to reach the best image quality.
■
Iris mode
: Select Indoor or Outdoor iris mode to adapt to the installation. The preset iris aperture
setting will apply.
