Conclusion: The Plustek OpticBook 4800 is designed for books, with a platen that comes to the edge of the scanner so a book can lie flat with one side hanging over the edge.
Pros: Platen comes to edge of scanner so book can lie flat. Scan software designed for books. LED light source eliminates warm-up time.
Cons: No ADF. No photo-related features, like dust removal or color restore.