Axis Communications P1427-LE View Area, Built-in IR Illuminations LEDs, Iris adjustment

AXIS P1427–LE Network Camera

Video

Consider an area where people or vehicles move during the day, but where there should be no movements during night. To be able to, for example, recognize faces or license plates, move the normal light priority slider toward low motion blur. At nighttime, motion detection is more important than identification. Motion blur is acceptable and since low light can cause a lot of noise, move

the low light priority slider toward low noise.

Example

If storage space or bandwidth is limited, try using a lower gain. This will reduce image noise and produce smaller image files.

Iris adjustment

Select Enable automatic iris adjustment to automatically compensate for changing light conditions. This option is not available if a fixed iris is used.

Use the Iris adjustment slider to set the preferred F-value. The scale represents the amount the iris is open. If set to 0, the iris is opened as much as possible. If set to 100, the iris is closed as much as possible. The actual F-value is shown below the slider. If automatic iris adjustment is enabled, the iris will stay at this position as long as light conditions are favorable. If light conditions change, the iris will adjust itself to the best iris settings. If automatic iris adjustment is disabled, the iris will lock on the set position regardless of light conditions

Day/Night

The IR cut filter prevents infrared (IR) light from reaching the image sensor. In poor lighting conditions, for example at night, or when using an external IR lamp, set the IR cut filter to Off. This increases light sensitivity and allows the product to “see” infrared light. The image is shown in black and white when the IR cut filter is off.

If using automatic Exposure control, set the IR cut filter to Auto to automatically switch between On and Off according to the lighting conditions.

The camera lens is IR corrected, which means that it maintains focus in mixed light, however a small focus adjustment is recommended when IR illumination is used. Select Enable focus adjustment for IR illumination to automatically adjust the focus when the IR cut filter switches between on and off.

The Day/Night shift level bar helps determine when the camera will shift from day mode to night mode. Normally, the camera automatically changes mode from day to night when very dark (level 100 in the slider). By setting Day/Night shift level to a lower value, the camera will change to night mode earlier.

Built-in IR Illuminations LEDs

CAUTION

Do not look directly into the IR LED at short distance. Since the IR light provided from the IR LED is powerful light outside of the visible range, please use the camera to check if IR light is activated or not.

The IR illumination can be activated or de-activated, and its intensity can be increased or decreased by moving the slider, from the product’s Live View page. Other settings can be defined from Setup > Video > Camera Settings.

De-select the Enable IR illumination option to disable IR illumination altogether. If you disable the Synchronize IR illumination with day/night option, IR illumination will not be synchronized with day/night changes.

View Area

A view area is a cropped part of the full view. Each view area is treated as a video source in Live View and has its own video stream and PTZ settings.

When setting up a view area it is recommended that the video stream resolution is the same size as or smaller than the view area size. Setting the video stream resolution larger than the view area size implies digitally scaled up video after sensor capture, requiring more bandwidth without adding image information.

To enable, go to Video > Camera Settings and select Enable View Areas.

To add a new view area:

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