> I need to scan a textbook, black and white. Could someone please > advice me about the settings (resolution, brightness, etc.) in order > to get a small pdf file? Some time ago, on this very list I believe, someone posted the results of their OCR experiments. It seems that accuracy peaked at about 300 dpi if I remember correctly, and actually dropped off below that. I don't remember what OCR engine he was using. I wouldn't scan the textbook directly to pdf, even if your only intention is to reprint it. In that case, just go to a photocopier. OCR and reformatting the text will look much nicer. If it's English text, then it shouldn't be much of a problem.
Thanks, Dotan. I have set the resolution at 300 dpi, but I get 1 MB per page. Can one reduce the size of the pdf file? Paul