scanner type: flatbed colour image scanner optical resolution: main 4800 dpi x sub 9600 dpi document size: reflective: 216x297mm (a4+letter) transparency: 36.83 x 44.5mm for afl 36.83 x 122mm for film holder area (35mm strip film: 6 frames with afl, 3 frames with film holder) 35mm slides: 2 frames with film holder) i/face: usb2.0 hi-speed photoelectric device: alternate 6 lines col ccd with micro lens (matrix) 81600 pixels (13600 x 2 line x 3 colours) light source: white cold cathode fluorescent lamp sub-scanning method: fixed document and moving carriage output resolution: 50 6400, 9600, 12800 dpi colours: internal 48 bit (281.5 trillion colours) output: 48 bit (281.5 trillion colours) 24 bit (16.7 colours million), 16 bit (65536 grayscale levels), 8 bit (256 grayscale levels), 1 bit monochrome scanning speed: reflective scanning: mono/24bit col a4 300dpi: 19s/21s film scanning: 35mm positive film: 4800dpi: 117 s/151 s (draft/best mode) 35mm negative film: 4800dpi: 117 s / 262 s (draft mode/ best mode) os: usb1.1: ms win 98se/me/2000 pro/xph/xpp/xp pro x64 ed; mac os x 10.2.8+ usb2.0: ms win 2000 pro/xph/ xpp/xp pro x64 ed; mac os x 10.2.8+