Axis P3224-LV User Manual page 20

AXIS P3224-LV Network Camera
Video
Exposure value - Use the Exposure value slider to adjust the overall brightness of the image.
Exposure control - Select a suitable option to control exposure.
For most scenes the Automatic option will provide the best results. The shutter speed is automatically set to produce optimum
image quality.
If the image flickers that can be caused by fluorescent lamps or other light sources. To reduce flicker in the image, select the Flicker
option that matches the power line frequency.
The Hold current option locks the current exposure settings.
Max exposure time - Shutter speed, also called 'exposure time' stands for the length of time the camera shutter is open, thereby
exposing the camera sensor to light. If shutter speed is fast it can freeze action effectively. If shutter speed is slow, it can cause
moving objects to appear blurred. Decreasing the exposure time will reduce motion blur.
Exposure zones - This setting determines which part of the image is used to calculate the exposure. For most situations, the Auto
setting can be used.
You can select a predefined area by defining Include and Exclude windows within the image. Exclude windows exclude areas that are
too bright or dark, and Include windows include areas in the scene that have better lighting which will contribute to the exposure data.
There must be at least one Include window. There can be a total of ten Include and Exclude windows to tailor the exposure zone.
Note that an Exclude window is effective only when placed inside an include window.
Tip: If an area is extremely bright draw an Include window to cover the whole area and define Exclude windows within it to
block out the bright areas.
Shutter & Gain
Normal Light - Use the slider to set the Priority between Low motion blur and Low noise. When prioritizing low noise (slider
all the way to the left) the Axis product will automatically decrease shutter speed as brightness decreases. When the shutter
speed reaches 1/30 s the Axis product will increase gain until the set maximum gain for normal light is reached. Select the Max
gain value from the drop-down list. This defines the upper limit for gain in the context of normal light. Max fast shutter sets
shutter speed limit in normal light conditions. Depending on a scenario, the shutter speed limit may need to be defined. This is
done through System Options > Advanced > Plain Config.
Low Light - Use the slider to set the Priority between Low motion blur and Low noise. When prioritizing low motion blur (slider
all the way to the right) the camera will automatically increase gain as brightness decreases. When the gain reaches the set
maximum gain for low light, the camera will decrease shutter speed until the set maximum shutter for low light is reached.
This is the default priority setting for low light.
Iris adjustment
Select Enable automatic iris adjustment to automatically compensate for changing light conditions. This option is not available
if a fixed iris is used.
Use the Iris adjustment slider to set the preferred F-value. The scale represents the amount the iris is open. If set to 0, the iris is
opened as much as possible. If set to 100, the iris is closed as much as possible. The actual F-value is shown below the slider. If
automatic iris adjustment is enabled, the iris will stay at this position as long as light conditions are favorable. If light conditions
change, the iris will adjust itself to the best iris settings. If automatic iris adjustment is disabled, the iris will lock on the set
position regardless of light conditions
Day/Night
The IR cut filter prevents infrared (IR) light from reaching the image sensor. In poor lighting conditions, for example at night, or when
using an external IR lamp, set the IR cut filter to Off. This increases light sensitivity and allows the product to "see" infrared light. The
image is shown in black and white when the IR cut filter is off.
If using automatic Exposure control, set the IR cut filter to Auto to automatically switch between On and Off according to the
lighting conditions.
The Day/Night shift level bar helps determine when the camera will shift from day mode to night mode. Normally, the camera
automatically changes mode from day to night when very dark (level 100 in the slider). By setting Day/Night shift level to a
lower value, the camera will change to night mode earlier.
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