当前,彩色幻灯片已成为传递科技信息有效的国际“语言”,广泛地应用在医疗、教学、科研领域里,发挥着重要的作用。彩色幻灯片的制作方法有两种,一是直接用彩色反转片摄制,二是用彩色负片和彩色正片拷贝获得。前者是拍摄后经反转冲洗获得的彩色正像(幻灯片),此法方便快捷,适合用于只 At present, color slide has become an effective international “language” for transmitting scientific and technological information. It is widely used in medical, teaching and research fields and plays an important role. There are two ways to make a color slide. One is to take a picture directly with a color reversal film and the other is to copy it with a color negative film and a color positive film. The former is a color positive (slide) obtained by reverse flushing after shooting, this method is convenient and quick, suitable for only