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本文论述了电影经纬仪的快门自动调光系统。这种系统是利用改变快门开口角的办法来改变曝光时间,以适应天空背景的亮度,从而达到控制底片密度的目的。该调光系统有使用价值,现已用于产品。
This article discusses the theodolite shutter automatic dimming system. This system is the use of changing the shutter opening angle approach to change the exposure time to adapt to the brightness of the sky background, so as to achieve the purpose of controlling film density. The dimming system has value, is now used in products.