放大的操作程序是:打开放大机布罩,调置好放大机如果放较大尺寸照片,还要将它倒置过来);将底片装入底片夹,药膜面向下;开启放大机光源,打开光圈;根据放大尺寸调整机器高度,对画面进行剪裁;测对焦点,收好光圈;根据底片反差选配相纸;决定曝光时间,进行试样;正式放大;显影、停影、定影水洗和干燥。 Enlarge the operating procedures are: open the magnifier cloth cover, adjust the magnifier if you put large size photos, but also put it inverted); the film into the film clip, the film facing down; open the magnifier light source, open Aperture; adjust the height of the machine according to enlarge the size of the screen to tailor; measuring the focus, close the aperture; according to negative film matching optional photographic paper; determine the exposure time, the sample; formally enlarged; development, stop filming, fixing washing and drying .