User manual
VIVOTEK
User's Manual - 59  
The methodology of using the Resize Buttons at the upper left corner of the streaming 
window is the same as that on the home page. 
Focus window:
By default, the optimal focus is found on a full view window. You may designate a custom window 
within your current eld of view to acquire the best focus out of it. However, you can not place a 
focus window on a distant background, e.g., a hall way that stretches away for 3 meters or farther. 
Doing so you will not benet from the Focus window function. 
■ 
Full view: The focus tuning takes place by referring to the full view. 
■ 
Custom: You can create a focus window and drag it to a place of interest in your view window. 
Note that it is recommended to use this function only when you have a solid object in your view 
window that is showing a consistent color or texture. This function will not take effect if you set 
the focus window on a distant background. 
5. Wait for the scan to complete. After a short while, the clearest image obtained should be 
displayed and the optimal focus range achieved. Use the arrow marks on the sides to 
ne-tune the focus if you are not satised with the results. 
You may still need to use the ar-
row marks to ne-tune the focus depending on the live image on your screen. “>” means moving 
from wide to tele end; and “<” tele to wide. 
You can try the Snapshot focus function (in Applications > Package management) 
when applied in the above mentioned scenario. 










