Focus & Zoom - Axis q1765-le User Manual

AXIS Q1765-LE Network Camera
Video and Audio
Gain, measured in decibel (dB), is the amount of amplification applied to the image. A high gain may provide a better image in low
light situations but will increase the amount of image noise.
Set Gain to
• Auto to set the gain automatically. If required, use Max gain to limit the applied gain.
• Fixed to use a fixed gain.
When Shutter and Gain are both set to Auto, it is possible to set the Priority between low motion blur and low noise manually and to
use a different Priority in Normal Light and in Low Light.
Example
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.
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. 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
WARNING
Risk of eye injury. Do not look directly into the IR LED at short distance. Since the light provided from the IR LED is outside of
the visible range, it is not possible to see if it is active. Use the camera to check if the IR illumination is active.
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 & Audio > 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.
Focus & Zoom
Go to Video & Audio > Focus & Zoom to change focus and zoom settings.
Set the Zoom tele limit to limit how far the camera can be zoomed from the live view page. The digital zoom level is indicated
with the letter D. To check the zoom tele limit, click Go to.
Select Auto focus to enable auto focus.
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