英语词汇“collimating mark”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	collimating mark
释义	collimating mark collimating mark An index mark, rigidly connected with the camera body, which forms an image on the negative. This image is used to determine the position of the optical center or principal point of the imagery. Also called fiducial marks.
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