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On the preview interface, right click mouse and then select PTZ; you can see an
interface shown as below.
Click Iris "+" to open menu or confirm current operation. Click up/down but-
ton to view all the items on the left pane of the following list. Click left/right
button to set the corresponding values on the right pane of the following list. If
there is
, click confirm button to go to the 2nd menu. Repeat the previous
steps to set detailed value. Click return button to go back to the previous menu
interface.
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