The 48-bit ArtixScan 1800f combines an optical resolution of 3,600 x 1,800 dpi and an impressive 4.8 Maximum Optical Density resulting in amazingly sharp, detailed image capture for the demanding standards of service bureaus and pre-press environments. Microtek's patented dual platen design accommodates a variety of reflective, positive, and negative film originals -- from 35mm up to 8 inch x 10 inch.