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AXIS Q1604–E Network Camera
Video and Au dio
Wide Dynamic Range (Dynamic Contrast)
Wide dynamic range (Dynamic Contrast) can improve the expo sure when there is a considerable contrast between light and dark
areas in the image. In intense backlight conditions, enable WDR. Disable WDR In low light conditions for optimal exposure.
Note
This se tting is only possible when us ing automatic exposure control.
Exposure Settings
Configure the expo sure settings to suit the image quality requirements in relation to lighting, frame rate and bandwidth
considerations.
Exposure value - Click in the bar to fine-tune the exposure.
Exposure control - These settings is used to adapt to the amount of light used. Automatic is the default settings ca n be used in most
situations. The shutter speed is automatically set to produce optimum image quality. Flicker-free 50 or 60 Hz is used to remove
flicker which can be caused by fluorescent and other light sources. The Hold current option locks the current exposure settings.
Enable Backlight compensation - Enable this option if a bright spot of light, for example a light bulb, causes other areas in
the image to appear too dark.
Exposure zones - This settings determines which part of the image is used to calculate the exposure. For most situations, the Auto
setting can be used. For particular requirement, select a predefined area.
Iris Configuration - See
Replacing the lens
The Enab le automatic iris adjustment option s hould always be selected, except
during focusing, or when using a fixed iris lens.
Shutter & Gain
The shutter and gain settings affect the amount of motion blur and noise in the image. To ad apt to dif ferent lighting, available
storage space and bandwidth, it is often necessary to prioritize either low motion blur or low noise. The Axis product allows
using different prioritization in norm al 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 s hutter 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.
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 different 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, rec ognize faces or license plates, m ove the normal light priority slider toward low m otion blur. At nighttime, motion
detection is more important than identifica tion. Motion blur is acceptable and since low light ca n cause a lot of nois e, move
the low light priority slider towa rd low noise.
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