AXIS M31 Network Camera Series
The device interface
Max gain
: Select the suitable max gain. If you increase the max gain, it improves the visible level of detail in dark images, but
also increases the noise level. More noise can also result in increased use of bandwidth and storage. If you set the max gain
to a high value, images can differ a lot if the light conditions are very different from day to night. Max gain works with max
shutter to improve the image.
P-Iris upload
: Select the installed and supported lens. Restart the camera for the changes to take effect.
Blur-noise trade-off
: Use the slider to adjust the priority between motion blur and noise. If you want to prioritize low bandwidth
and have less noise at the expense of details in moving objects, move the slider towards
Low noise
. If you want to prioritize the
preservation of details in moving objects at the expense of noise and bandwidth, move the slider towards
Low motion blur
.
Note
You can change the exposure either by adjusting the exposure or by adjusting the gain. If you increase the exposure time,
it results in more motion blur, and if you increase the gain it results in more noise. If you adjust the
Blur-noise trade-off
towards
Low noise
, the exposure will prefer longer exposure times over sensor gain when the exposure is increased, and
the opposite if you adjust the trade-off towards
Low motion blur
. Both the gain and exposure time will eventually reach
their maximum values in low-light conditions, regardless of the priority set.
Lock aperture
: Turn on to keep the aperture size set by the
Aperture
slider. Turn off to allow the camera to automatically adjust
the aperture size. You can, for example, lock the aperture for scenes with permanent light conditions.
Aperture
: Use the slider to adjust the aperture size, that is, how much light passes through the lens. To allow more light to enter
the sensor and thereby produce a brighter image in low-light conditions, move the slider towards
Open
. An open aperture also
reduces the depth of field, which means that objects close to or far from the camera can appear unfocused. To allow more of
the image to be in focus, move the slider towards
Closed
.
Exposure level
: Use the slider to adjust the image exposure.
Defog
: Turn on to detect the effects of foggy weather and automatically remove them for a clearer image.
Note
We recommend you not to turn on
Defog
in scenes with low contrast, large light level variations, or when the autofocus is
slightly off. This can affect the image quality, for example, by increasing the contrast. Furthermore, too much light can
negatively impact the image quality when defog is active.
Stream
General
Resolution
: Select the image resolution suitable for the surveillance scene. A higher resolution increases bandwidth and storage.
Frame rate
: To avoid bandwidth problems on the network or reduce storage size, you can limit the frame rate to a fixed amount.
If you leave the frame rate at zero, the frame rate is kept at the highest possible rate under the current conditions. A higher
frame rate requires more bandwidth and storage capacity.
Compression
: Use the slider to adjust the image compression. High compression results in a lower bitrate and lower image quality.
Low compression improves the image quality, but uses more bandwidth and storage when you record.
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