Pacific Image PrimeFilm 120 Pro Multi-Format CCD Film Scanner with 3200dpi Optical Resolution, USB Connectivity Scanning Media - Negatives and positives, in color and monochrome / 35mm film - 1 strip of 1-6 frames (max.); 35mm slides - 1- 4 slides with mounts; Medium-format film - 1-2 frames (6 x 4.5),1-2 frames (6 x 6), 1 frame (6 x 7, 6 x 8, 6 x 9, 6 x 12 ) Optical resolution Up to 3,200 pixels per inch. Image Sensor 3 line R, G & B linear CCD sensor Color separation Performed by CCD RGB filters & white LEDs A/D conversion 16 Bits per channel (i.e. 48-bit)