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Opticbook 3600 scans a full A4/Letter sized page in 7-8 seconds, either in black and white monochrome 300dpi, grey or color mode, the fastest flatbed scanner I've been using so far under $250. I've been using Epson 1660 and 1670, which are about the same speed, 11-12 seconds a page for 300dpi A4 b/w. In my experience, Epson 1660 and 1670 are only second to Opticbook 3600 among fast speed low-cost scanners, with an average price below $100 and easy to carry within a backpack. But Opticbook 3600 certainly has the advantage of zero-edge scanning and auto-rotating pages while scanning. I wish Plustek could further improve the speed of their Opticbook models, for example, a speed of 2-3 seconds per A4 page would be perfect. That theoretically means a 300-paged book can be scanned within 10 minutes. For splitting the A4 sized tiff page into two A5 pages automatically, I use Photoshop macro function. I have tried Abbyy Finereader auto dual-page separator, but the problem with it is that it often fails to split the page evenly and it doesn’t split the blank page, which could result in undesired pdf file creation.
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