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染蓝幻灯片在国内的学术交流和电化教学中应用广泛,很受欢迎。这种幻灯片制作方法简单,颜色醒目。笔者近年来接触了较多的X光片的染蓝幻灯片制作,发现用常规的染蓝制作方法存在着一些问题,所以在传统染蓝幻灯片制作工艺上做了若干改进,效果较好。现介绍如下: 1 翻拍X光片 X光片是射线经过不同介质,在不同电压条件下留下的不同密度而形成的影像。翻拍时我们依据读片灯的透射光线,为增加其清晰度选用小光圈。采用f11、1—2秒的曝光组合。由于X光片夹在观片屏上,四周还有光亮,容易产生光晕,可以用黑纸遮挡。当然必须使照相机固定,同时用快门线启动快门。
Blue dye slides in the domestic academic exchanges and teaching of electrochemical widely used, very popular. This slide production method is simple, eye-catching colors. In recent years, the author has contacted more blue-ray slide production of X-ray films and found that there are some problems with the conventional blue dye production method. Therefore, some improvements have been made in the traditional blue-dye slide production process, and the effect is better. Are introduced as follows: 1 remake X-ray X-ray film is the radiation through different media, at different voltage conditions leaving the formation of different density images. When we remake based on the reading film light transmission, in order to increase the clarity of small aperture selection. Using f11, 1-2 seconds exposure combination. As the X-ray film clip on the viewing screen, surrounded by bright, prone to halo, you can use black paper to block. Of course, the camera must be fixed while the shutter is used to activate the shutter.