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一、文字材料准备首先将文章重点缩写成摘要,每个中心独立成自然段落,然后用碳素墨水抄写在白纸上,或利用四通打字机、微机打印出。字体要黑,若墨迹较浅时可用紫外线灯照射或放入高压氧仓内处理2h,以加强氧化促使字迹转黑。每张字数不宜过多,规格15字×7行或17字×8行,切忌通篇连缀。文字幻灯片制作一般不超过15张,若太多会因时间限制而影响发言效果。二、感光胶片选择通常选用黑白正片、黑白缩微片摄制,而后显影漂染可获色彩鲜艳、文字图表清晰的幻灯片。正片的药膜乳剂与负片基本相同,但正片因无中间灰色影润并且银粒细、感光慢、反差强,较适宜黑白反差大的文字材料拍摄和拷贝。在正片购买困难时也可用黑白负片制作幻灯。此外,彩色正片也是近年常用的一种感光材料。彩色反转片拍摄条件要求较高,冲洗工艺复杂,主要用于实物标本摄影而很少制作文字幻灯。三、拍摄冲洗工艺器材准备:DF型135相机,近摄接圈或近摄镜,快门线,曝光表,翻拍机等。
First, the text material preparation First of all the article focuses on shortened abstracts, each center into a natural passage of independence, and then use carbon ink copied on white paper, or use four-way typewriter, computer print out. Fonts should be black, if the ink is light, UV lamp irradiation or exposure to hyperbaric oxygen chamber treatment 2h, in order to enhance the oxidation of black to promote writing. Each word should not be too much, the size of 15 characters × 7 lines or 17 words × 8 lines, should not be linked through the whole article. Text slides produced generally not more than 15, if too much time constraints affect the speech effect. Second, the choice of photosensitive film is usually the selection of black and white positives, black and white microfilm filming, and then developing bleaching and dyeing will be colorful, clear text charts slides. The positive film emulsion and negative film is basically the same, but the positive because there is no intermediate gray shadow run and silver fine, slow sensitivity, contrast strong, more suitable for large black and white text material shooting and copying. In the positive buying difficulties can also be black and white negative film slideshow. In addition, color positive film is also commonly used in recent years, a photosensitive material. Color reversal film shooting conditions require a higher processing complexity of the process, mainly for physical specimen photography and seldom make text slideshow. Third, shooting process equipment preparation: DF type 135 camera, close-loop or close-up lens, shutter line, exposure meter, remake machines.