Vivotek FD8167 User Manual page 61

■ Full-range scan: If selected, the auto focus scan will be performed throughout the complete
range of focus The full-range scan takes a longer time to complete A full-range scan usually
takes approximately 3 minutes or longer
■ Fully-open Iris: By default, this checkbox is selected for performing an auto scan and should
provide an optimal scan result
Focus window:
By default, the optimal focus is found on a full view window You may designate a custom window
within your current field of view to acquire the best focus out of it. However, you can not place a
focus window on a distant background, eg, a hall way that stretches away for 3 meters or farther
Doing so you will not benefit 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
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User's Manual - 61