Dahua Network Camera Web 3.0 - Page 22

Dahua Network Camera Web 3.0 Operation Manual
14
Figure 3-5
Please refer to Table 3-5 for more details about the parameters of zoom and focus.
Parameter
Function
Zoom
Adjust the focal length of the lens by clicking or long pressing “+”“-”buttons.
The speed is used to adjust the length of one step during single click.
Focus
Adjust the sharpness of the lens by clicking or long pressing“+”、“-” buttons.
Step length is used to adjust the length of one step with one click.
Auto-
focus
Click to adjust the image definition automatically.
Note
Other lens operations are not allowed during the process of auto-focus.
Restore
All
Reset the lens to zero position to eliminate the accumulative error of lens.
Note
Please reset when the image adjustment is not clear or operating zoom focus many
times.
Refresh
Synchronize the location of drag slider of lens and zoom focus after hardware zoom
focusing.
Regional
Focus
Click it and use the mouse to select a zone, then the device can auto focus within the
specific region.
Note
Some devices do not support the function.
Table 3-5