Image lag is one of the important characteristics of photoconductivity-type camera tubes with low-velocity electron beam.

惰性是慢电子束扫描光电导型摄象管的重要性能指标之一。

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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.

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。

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Prior to this, there was a lag time of a few seconds (depending on your system) if you wanted to zoom in or out on an image.

在此之前如果你想放大或缩小图像时会有几秒的时滞（取决于你的系统）。

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Be aware, however, that the same shutter lag seen when capturing an image while using the live view option on the rear of the DSLR is present here, too.

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Tests of the virtual fence didn't lead to nearly as many arrests as designers had hoped, and the lag from sensor detection to transmission of an image to border agents was apparently a big part of the problem.

ENGADGET: Border Patrol's virtual fence canceled for not being as good as a fence

The much larger sensor and superior processing gives you massively better image quality, they're much faster (with little or no lag) so better for action, there's a lot more creative control over things like depth of field, the option to change lenses, add flashguns etc add to creative possibilities and also increase image quality.

BBC: Tips for picking the right camera