Axis P3925-LRE User Manual page 8

AXIS P3925-LRE Network Camera
Additional settings
• To lock the current exposure settings, select Hold current.
Optimize IR illumination
In most cases, the exposure of the image is automatically adjusted to obtain optimal image quality. If the camera is placed close to a
wall or a corner, it can sometimes result in saturation of parts of the image. When this happens, the LED's closest to the wall or
corner are automatically dimmed to avoid saturating the image.
Depending on the installation environment and the conditions around the camera, for example external light sources in the scene,
you can sometimes improve the IR illumination if you manually adjust the intensity of the LED's.
1. Go to Settings > Image > Day and night, and turn on Allow illumination.
2. Turn on Live view control.
3. Minimize Settings.
4. In the live view control bar, click the Illumination button, turn on IR light and select Manual.
5. Adjust the intensity.
Benefit from IR light in low-light conditions using night mode
Your camera uses visible light to deliver color images during the day. As the available light diminishes, you can set the camera to
automatically shift to night mode, in which the camera uses both visible light and near-infrared light to deliver black-and-white
images. Since the camera uses more of the available light it can deliver brighter, more detailed, images.
1. Go to Settings > Image > Day and night, and make sure that the IR cut filter is set to Auto.
2. To determine at what light level you want the camera to shift to night mode, move the Threshold slider toward Bright
or Dark.
Note
If you set the shift to night mode to occur when it's brighter, the image remains sharper as there will be less low-light
noise. If you set the shift to occur when it's darker, the image colors are maintained for longer, but there will be more
image blur due to low-light noise.
Reduce noise in low-light conditions
To reduce noise in low-light conditions, you can adjust one or more of the following settings:
• Adjust the trade-off between noise and motion blur. Go to Settings > Image > Exposure and move the Blur-noise
trade-off slider toward Low noise.
• Set the exposure mode to automatic.
Note
A high max shutter value can result in motion blur.
• To slow down the shutter speed, set max shutter to the highest possible value.
• Reduce sharpness in the image.
Note
When you reduce the max gain, the image can become darker.
• Set the max gain to a lower value.
• Open the aperture.
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