Axis 233D User Manual page 22

AXIS 233D - Video & Image Settings
22
Low Light Behavior
The settings for Low Light Behavior determine how the camera behaves at low light levels.
These settings affect video image quality and frame rate.
• Exposure control - This setting is used to adapt to the amount or type of light
used. Automatic is the default setting and can be used in most situations. The
shutter speed is automatically set to produce optimum image quality. Use Manual
if you have special requirements for the exposure setting. Allow slow shutter can
be enabled/disabled when the exposure control is set to Automatic.
• Max exposure time - Increasing the exposure time will improve image quality,
but at the expense of the frame rate. There may also be an increase in motion
blur.
• Max gain - Measured in decibels (dB). A high level of amplification may provide
a better image in very low light situations.
Please use the online help files
Image Settings
• Autofocus enabled (default setting).
• Stabilizer - When monitoring an environment that is subject to vibrations (such
as traffic control) images can appear unsteady. To improve image quality, choose
High frequency if the vibrations in your environment have high frequency, or
choose Low frequency if the vibrations have low frequency.
• Image freeze on PTZ - Choose All movements from the drop-down list to freeze
the image during camera movement. Once the camera reaches its new position
the current image is shown. Presets freezes the image only when the camera
moves between preset positions.
MPEG-4 Settings
Tools for adjusting the MPEG-4 settings and for controlling the video bit rate.
The MPEG-4 standard provides several coding tools for different applications and different
situations. As most MPEG-4 clients do not support all of these tools, one usually defines
and uses subsets for different clients or group of clients. Under Client Compatibility, select
the settings appropriate for your viewing client.
The bandwidth used by the MPEG-4 stream can be controlled by adjusting the maximum
bit rate and setting the bit rate type to variable or constant.
For more information on these advanced settings, please see the online help files
for more information.
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