Axis F34, Руководство пользователя, Страница: 22 / 64

AXIS F34 Main Unit
Video
Increasing the Sharpness can increase bandwidth usage. A sharper image might increase image noise especially in low light
conditions. A lower setting reduces image noise, but the whole image will appear less sharp.
The Contrast changes the relative difference between light and dark. It can be adjusted using the slidebar.
Local Contrast applies contrast to a specific area of the image. Use the slider to adjust the contrast, where a higher value produces
an image with high contrast between the dark and light areas and is suitable for scenes with wide dynamic range.
White Balance
To change this setting go to Setup > Video > Camera Settings
White balance is used to make colors in the image appear the same regardless of the color temperature of the light source. The Axis
product can be set to automatically identify the light source and compensate for its color. Alternatively, select the type of light
source from the drop-down list. For a description of each available setting, see the online help .
The white balance window is enabled for the Automatic and Automatic outdoor options that appear in the White balance drop-down
list. Select one of the options from the drop-down list to set the white balance window properties. Select Automatic to use the
default settings for the Automatic and Automatic outdoor options (in the White balance drop-down list). Select Custom to manually
set a reference window for white balance in the view area.
Exposure Settings
Configure the exposure settings to suit the image quality requirements in relation to lighting, frame rate and bandwidth
considerations.
Exposure value - Use the Exposure value slider to adjust the overall brightness of the image.
Exposure control - This setting is used to adapt to the amount of light used. Automatic is the default setting and can 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.
Max exposure time - Decreasing the exposure time will reduce motion blur. For more information, see the online help
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. For particular requirements, select a predefined area.
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.
Privacy Mask
A privacy mask is a user-defined area that prevent users from viewing parts of the monitored area. Privacy masks appear as
blocks of solid color or blurred image elements and are applied on the video stream. Privacy masks cannot be bypassed using the
VAPIX® application programming interface (API).
The Privacy Mask List ( Video > Privacy Mask ) shows all the masks that are currently configured in the Axis product and indicates
if they are enabled.
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