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Some ZAVIO network cameras are equipped with active IR LEDs providing the
ability to capture video in complete darkness. Note, that if your camera is not equipped with
IR LEDs, this menu will not be available. Also note that some menu items will vary depending
on your camera model.
Infrared cut-off filters are designed to reflect or block mid-infrared wavelengths while passing
visible light. They are often used in network video cameras to block IR due to the high
sensitivity of many camera sensors to near-infrared light. With the filter in place before the
image sensor, the camera will not be able to pick up IR light, but it generates true color video.
Once the IR cut filter is removed, the camera becomes IR light sensitive and will generate a
black and white image – and it does that even in complete darkness if the IR LEDs are active.
Day/Night:
IR Cut Filter Mode-
Auto-- The camera decides when to
remove the IR cut filter based on the IR
Cut Filter Threshold you can specify. The
switch delay ensures that the camera only
switches the IR Cut Filter after the specified amount of time has passed.
Night Mode-- This is the opposite of the day mode. If this mode is enabled, the
camera always removes the IR cut filter. As a result, the camera will always be IR
sensitive, regardless of the actual light levels, and the image will be rendered in
B/W mode. Using night mode in day light conditions is not recommended as it
leads to a poor image quality with false and washed out colors.
Day Mode-- In this mode the camera does not remove the IR Cut Filter from the
image sensor regardless of any other settings. So only visible light will pass
through and the image will be in color mode
Schedule-- Select this option, if you wish to control exactly when you want the
camera to engage the night mode. You can use the internal scheduler to define a
time pattern for each day of the week, e.g., no night mode on the weekends, but
night mode from MON to FRI from 21.00 hours to 06.00 hours. The scheduler is
explained in detail later on.
IR Cut Filter Switch Delay- For user to define the time duration (how many seconds)
between IR being turned on or off from the current status.
IR Cut Filter Threshold- Here we use an example to explain how IR cut filter threshold
works. If you set Dark as 30 lux and Bright as 70 lux, that means when luminance is less
than 30 lux, the camera switches to night mode(B/W), and when luminance is more than
70 lux, the camera switches to day mode(color), if the luminance is between 30 lux and
70 lux,the camera stays in current mode.
