[. . . ] En Using the FH-869G Glass-Covered Holder for Brownie Film: A CAUTION The FH-835G is used when scanning medium-format (120/220) or 59 mm × 82 mm film for electron microscopes. [. . . ] Do not place negative and positive film in the holder at the same time. Be sure to align the end of the first frame of the film with the film line on the holder. Leaving a gap between the film and the line could interfere with accurate color reproduction. Direction of insertion Multiple single-frame strips of film can be inserted in the holder at the same time, but be sure not to mix positive and negative film. The glass in the lower portion of the holder has been treated to prevent interference. [. . . ] Leaving dust, lint, or other foreign objects on the film or holder during scanning could result in reduced image quality or in damage to the film. [. . . ]