1. Check "Enable" and then click the "Draw Area" button.
2. Drag the mouse to set the ROI area.
3. Set the level.
4. Click the "Save" button to save the settings.
3.2.6 Lens Control
This function is only available for the models with motorized zoom lens. In this
section, zoom and focus can be controlled. If the image is out of focus after a manual
adjustment, one key focus can be used to set the focus automatically. Go to
ConfigImage Zoom/Focus interface to set.
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