User Manual

AXIS P3384–V
Video and Audio
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 necessar y to prioritize e ither low motion blur or low noise. The Axis product allows
using 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 si tuations but will incre ase the amount of image noise.
Set Gain to
• Auto to set the gain automatically. If required, use Max gain to limit the applie d gain.
• Fixed to use a fixed gain.
When Shutter and Gain are both set to Auto, it is possible to set the Priority between low motion blur and low noise manually and to
use a differ ent Priority in Normal Light and in Low Light.
Example
Consider an area where people or vehicles move during the day, but where there should be no movements during night. To be able to,
for example, recognize faces or license plates, m ove the normal light prior ity s lide r toward low motion blur. At nighttime, mo tion
detection is more important than identifica tion. Motion blur is accepta ble and since low light can cause a lot of noise, move
the low light priority slider toward low noise.
Example
If s tora ge space or bandwidth is limited, try using a lower gain. Thi
s will reduce image noise and produce smaller image files.
Iris adjustment
Select Enable automatic iris a djustment to a u tomati cally compensate for changing light conditions. This option is not available
if a fixed iris is used.
Day/Night
The IR cut filter prevents infrared (IR) light fro m reaching the image sensor. In poor lighting conditions, for example at night, or
when using an IR lamp, se
ttheIRcutfilter to Off. This increases light sensitivity and al lows 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,settheIRcutfilter to
Auto to automatically switch between On and Off accordingtothe
lighting conditions.
View Areas
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
st
ream and PTZ settings.
To enable view areas, go to Video & Audio > Camera Settings and select Enable View Areas.
When setting up a view area it is recommended that the video strea m resolution is the same size as or smaller t han the view area
size. Setting the video stream resolution larger than the view area si z e implies digitally scaled up video after sensor capture,
requiring more bandwidth without adding image information.
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