Axis F44 User Manual

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AXIS F44 Main UnitVideo and AudioExposure zones - This setting determines which part of the image is used to calculate the exposure. For most situations, the Autosetting can be used. For particular requirements, select a predefined area.Shutter & GainThe shutter and gain settings affect the amount of motion blur and noise in the image. To adapt to different lighting, availablestorage space and bandwidth, it is often necessary to prioritize either low motion blur or low noise. The Axis product allowsusing 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 allowsmore light to reach the sensor and can help produce a brighter image in low light situations. On the other hand, a slow shutterspeed 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 framerate 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 lowlight 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 touse a different Priority in Normal Light and in Low Light.ExampleConsider 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, move the normal light priority slider toward low motion blur. At nighttime, motiondetection is more important than identification. Motion blur is acceptable and since low light can cause a lot of noise, movethe low light priority slider toward low noise.ExampleIf storage space or bandwidth is limited, try using a lower gain. This will reduce image noise and produce smaller image files.Privacy MaskA privacy mask is a user-defined area that prevent users from viewing parts of the monitored area. Privacy masks appear asblocks of solid color or blurred image elements and are applied on the video stream. Privacy masks cannot be bypassed using theVAPIX® application programming interface (API).The Privacy Mask List (Video & Audio > Privacy Mask) shows all the masks that are currently configured in the Axis product andindicates if they are enabled.You can add a new mask, re-size the mask with the mouse, choose a color for the mask, and give the mask a name.For more information, see the online helpImportantAdding many privacy masks may affect the product’s performance.22