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在照相机设计中,焦平面快门(英语:focal-plane shutter)是指快门直接被放置于照相机焦平面前方的快门,即快门与图像传感器或底片平行。
In camera design, a focal-plane shutter (FPS) is a type of photographic shutter that is positioned immediately in front of the focal plane of the camera, that is, right in front of the photographic film or image sensor.
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