Axis P1254 User Manual page 19

AXIS P1254 Network Camera
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
Exposure is the amount of light the camera's sensor captures for a scene. Too much light results in a washed out image and too
little light results in a dark image.
Exposure value - Use the Exposure value slider to adjust the overall brightness of the image.
Exposure control - Select a suitable option to control exposure.
For most scenes the Automatic option will provide the best results. The shutter speed is automatically set to produce optimum
image quality.
If the image flickers that can be caused by fluorescent lamps or other light sources. To reduce flicker in the image, select the Flicker
option that matches the power line frequency.
The Hold current option locks the current exposure settings.
Max exposure time - Shutter speed, also called 'exposure time' stands for the length of time the camera shutter is open, thereby
exposing the camera sensor to light. If shutter speed is fast it can freeze action effectively. If shutter speed is slow, it can cause
moving objects to appear blurred. Decreasing the exposure time will reduce motion blur.
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.
You can select a predefined area by defining Include and Exclude windows within the image. Exclude windows exclude areas that are
too bright or dark, and Include windows include areas in the scene that have better lighting which will contribute to the exposure data.
There must be at least one Include window. There can be a total of ten Include and Exclude windows to tailor the exposure zone.
Note that an Exclude window is effective only when placed inside an include window.
Tip: If an area is extremely bright draw an Include window to cover the whole area and define Exclude windows within it to
block out the bright areas.
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.
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