Image Quality - Axis M3104-LVE User Manual

AXIS M31 Series
Setup

Image quality

Select exposure mode
There are different exposure mode options in the camera that adjusts aperture, shutter speed, and gain to improve image quality for
specific surveillance scenes. Go to Settings > Image > Exposure and select between the following exposure modes:
• For most use cases, select Automatic exposure.
• For environments with certain artificial lighting, for example fluorescent lighting, select Flicker-free.
Select the same frequency as the power line frequency.
• For environments with certain artificial light and bright light, for example outdoors with fluorescent lighting at night and
sun during daytime, select Flicker-reduced.
Select the same frequency as the power line frequency.
• To lock the current exposure settings, select Hold current.
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.
3. Enable Allow IR illumination and Synchronize IR illumination to use the camera's IR light when night mode is activated.
Note
If you set the shift 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:
• 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.
Reduce motion blur in low-light conditions
To reduce motion blur in low-light conditions, you can adjust one or more of the following settings:
Note
Image noise will increase if you increase the gain.
• Increase shutter speed and gain. Go to Settings > Image > Exposure and set Max shutter to a shorter time, and Max gain
to a higher value.
9