What is the difference between "Autofocus-at-scan" and "Point Autofocus" on the scanner preferences setting?
When checking "Autofocus- at -scan" at the scanner preferences, the scanner's autofocus system uses the center of the image to determine focus. While, "Point AF" focuses on a selected point on the image.
*In "Autofocus- at -scan", focus adjustment is performed at prescan or final scan.
*No focus adjustment is performed either when Auto Loading Index is activated or at index scan.
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