HP Scanjet 4850 Photo Scanner - Resolution: Up to 4800 dpi (optical); Colour depth: 48-bit; Scan speed: about 8 seconds for multiple image scan, about 27 seconds for single image scan (4 x 6 inch colour photo to file), about 7 seconds for multiple image scan, about 26 seconds for single image scan (35 mm slides to file), about 8 seconds for multiple image scan, about 41 seconds for single image scan (35 mm negatives to file), about 29 seconds for single image scan (OCR 8.5 x 11 inch text to Microsoft® Word), about 36 seconds for single image scan (4 x 6 inch colour photo into share/e-mail), about 50 seconds for single image scan (8.5 x 11 inch PDF to e-mail)