Capturing book and magazine pages, however, is just one of many possible uses, ranging from capturing objects for presentations to classroom or online teaching.

In many ways, the CZUR ET24 Pro and its ilk resemble old-fashioned overhead projectors. It also features automatic focus and page-turn detection, and you can even use the device in a Visual Presenter mode, with an HDMI port for playing video captured by the CZUR directly to monitors or HDTVs or livestreaming. The CZUR ET24 Pro comes with a foot pedal or desk button that frees your hands for turning book pages or placing new content (up to tabloid size) on the scan platform. Overhead scanners are specialized devices with elevated cameras for scanning book or magazine pages. Of course, it's overkill for a small or even midsize office, but it stands almost alone as a high-volume, large-format desktop document scanner. It's far from cheap at $2,499, but the DS-30000 is only half the cost of some of the copy-machine-size corporate scanners it competes with. The latter not only scans to a plethora of file formats and cloud and archiving sites, but it offers friendly Home, Office, and Professional modes for different levels of user expertise.

Epson backs it with a three-year warranty with next-business-day replacement and bundles it with state-of-the-art document-management and scanner-interface software. Its automatic document feeder holds up to 120 letter- or 60 A3-size pages, and its daily duty cycle is a juggernaut 30,000 scans. The Epson DS-30000 laughs at your mere letter- and legal-size pages-this enterprise-class document manager and archiver can handle tabloid (11-by-17-inch) sheets, despite taking little more room than a standard sheetfed desktop scanner.

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