论文部分内容阅读
小型相机翻照档案所謂小型相机,一般是指用35毫米胶片照像的相机,这种相机国产的有上海58—Ⅱ型,苏联的卓尔基、吉也夫,德国的萊卡、康太克斯等等。这些相机都可以用来翻照档案文件。翻照档案文件时,为固定相机位置,需使用翻照机架,相机装在架子上,机身平稳、曝光准确,复制出的底片清楚。由于相机构造不同,需要的架子也不一样。凡是相机的取景器和鏡头是一个光学系統的,比如康太克斯、普拉蒂納等相机就可以用簡单翻照机架。在相机上加上鏡头延伸圈,可以翻照比火柴盒还小的文件。用这类架子可以用相机的取景器直接取景。翻照的质量也好。但是,它有两个缺点:一个缺点是,当翻照不同尺寸的档案文件时,每次都要重新用目力确定翻照的面积
The so-called small camera camera files, the so-called small camera, generally refers to 35 mm film camera, this camera made in Shanghai 58-Ⅱ-type, the Soviet Union Zhuoji Ji Yifu Germany Lycra, and many more. These cameras can be used to flip the archive. To copy the file, in order to fix the position of the camera, you need to use the photo frame, the camera mounted on the shelf, the body is stable, accurate exposure, copy the negative clearly. Due to the different camera structure, the shelves are not the same. Where the camera’s viewfinder and lens is an optical system, such as the company, such as the company, Platina and other cameras can use a simple flip rack. In the camera with lens extension ring, you can flip the file smaller than the matchbox. Use this type of shelf to view the camera directly with the viewfinder. Flipped the quality of Ye Hao. However, it has two drawbacks. One disadvantage is that each time a file of different sizes is typed,