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  • I could be wrong, but I thought a "full" scan goes faster if you do the overview scan first. Thus, even if you disabled the overview scan (assuming there were a way to do so), it wouldn't actually save you any time because the full scan would take that much longer. Commented Jan 4, 2013 at 20:20
  • The overview makes the full scan faster IF it allows the application to locate the non-blank ink on the page -- thus avoiding a full-page scan in case the picture to scan is smaller than a full page. But this will not help me if I do want a full-page scan, let alone if the overview is performed on the wrong scanner altogether... Commented Jan 4, 2013 at 20:24
  • Can you please confirm if scanning from Preview app also performs an automatic Overview Scan? I can’t do so now as I don’t have my scanner handy. Commented Jan 5, 2013 at 8:13
  • 2
    The Preview app apparently launches Image Capture to do the scanning, since I get the exact same interface and behaviour (including the overview scan). Commented Jan 5, 2013 at 14:20
  • The Preview app does not automatically do an overview scan in my case, when you select "Import from ...". And, more importantly, it does not do an overview scan from my multi-function printer when I want to import images from my iPhone... Commented Apr 12, 2014 at 14:18