相机按下快门，这时相机自动对焦、测光、计算曝光量、选择合适曝光组合进行数据计算和存储处理所需要的时间称为快门延迟。
快门延迟是你按下快门键和相机实际抓拍瞬间相隔的时间差。
Shutter lag is the time between your pressing the shutter button and the moment the camera actually snaps.
据Packingham介绍，这款摄像头能够”0快门延迟“的拍照并且能够在光线不好的环境下拍出令人满意的照片。
Packingham says the camera should shoot pics with “zero shutter lag,” and is capable of taking shots in low-light settings.
这限制了在拍摄每一张照片时部件需要调整的配件的运动，并造成按下快门按钮和拍摄图像之间的延迟现象。
This limits the number of moving parts which need to be adjusted every time a photo is taken, and which cause a lag between pressing the shutter-release button and capturing the image.
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