学术报告、科学讲座等,经常需要出示大量图表资料。为此,近年来大都采用幻灯方式放映。我们经多年实践,觉得保定航空微粒Ⅱ型胶片具有高速、高反差,层次适中等优点。可不必另设灯光,在普通办公室、现场光条件下,手持照相机翻拍资料,按本文介绍的数据与配方,可制出相当好的幻灯片。如公审“四人帮”时,曾用航空片将罪证材料制成幻灯片,在法庭上出示,取得良好效果。 Academic reports, scientific lectures, etc., often need to produce a large number of chart information. To this end, most of the slide show in recent years. After years of practice, we feel that Baoding Aeronautical Particle Type II film has the advantages of high speed, high contrast and moderate gradation. You do not have to set a separate light, in the general office, the scene light conditions, hand-held camera remake information, according to the data and formulations described in this article, can make a very good slide. In the trial of the “Gang of Four,” he used air films to make slides of evidence materials and presented them in court to obtain good results.