AXIS P3904-R Network Camera
About video settings
Shutter & Gain
The shutter and gain settings affect the amount of motion blur and noise in the image. To adapt to different lighting, available
storage space and bandwidth, it is often necessary to prioritize either low motion blur or low noise. The Axis product allows different
prioritization in normal light and in low light.
Shutter speed
is related to the amount of time the shutter is opened and is measured in seconds (s). A slow shutter speed allows
more light to reach the sensor and can help produce a brighter image in low light situations. On the other hand, a slow shutter
speed can cause moving objects to appear blurry.
Set
Shutter
to:
•
Auto
to set the shutter speed automatically. If required, use
Max shutter
to limit the shutter speed to prevent the frame
rate from being reduced.
For example, to get 30 fps, set
Max shutter
to 1/30.
•
Fixed
to use a fixed shutter speed.
Gain
, measured in decibel (dB), is the amount of amplification applied to the image. A high gain may provide a better image in low
light situations but will increase the amount of image noise.
Set
Gain
to:
•
Auto
to set the gain automatically. If required, use
Max gain
to limit the applied gain.
•
Fixed
to use a fixed gain.
Example
If storage space or bandwidth is limited, try using a lower gain. This will reduce image noise and produce smaller image files.
View Area
A view area is a cropped part of the full view. Each view area is treated as a video source in
Live View
and has its own video
stream and PTZ settings.
When setting up a view area, it is recommended that the video stream resolution is the same size as or smaller than the view area
size. Setting the video stream resolution larger than the view area size implies digitally scaled up video after sensor capture,
requiring more bandwidth without adding image information.
To enable, go to
Video > Camera Settings
and select
Enable View Areas
.
To add a new view area:
1. Go to
Video > View Area
.
2. Click
Add
.
3. The new view area appears under
Selected view area
. Enter a descriptive name in the
Name
field.
4. Select an
Aspect ratio
and a
Video stream resolution
.
5. A new view area covers the whole image. Use the mouse to move and resize the view area.
6. Select
Enable PTZ
to enable digital PTZ for the view area.
7. Click
Save
to save the settings.
To modify a view area, select the view area in the list and modify the settings as required. Click
Save
.
To remove a view area, select the view area and click
Remove
.
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