Projectable image area on 70 mm motion-picture film,8/70 format
MOD SMPTE 420M-2005
机械工业电影和电教机械标准化技术委员会
本标准规定了70 mm 8齿孔特殊影片的最大可放映画面区域的尺寸，并规定了这个区域和孔的位置以及和基准边的关系。
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