Vivotek FD8371EV user manual Auto Focus

VIVOTEK

Auto Focus:

Click the Perform auto focus button for the camera to automatically find the best focus. The process takes about 1 or 2 minutes to complete. A color bar will appear below the Focus slide bar. When the scan is completed, the Focus pointer will stay at the optimal location on the slide bar.

You may still need to use the arrow marks to fine-tune the focus depending on the live image on your screen. “>” means moving from wide to tele end; and “<” tele to wide.

■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, e.g., 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.

58 - User's Manual