这样的话，可以通过后期处理减弱曝光度，同时因为相机感光较多，可以把噪点限制到最少。
This way the exposure can always be decreased afterwards — while still maintaining minimal image noise because more light was collected at the digital sensor.
有一个好例子是眼睛中的盲点——视网膜中不含感光细胞的点。
One well-known example of this is the blind spot in the eye, which is a point in the retina which contains no sensory cells.
在手持相机拍摄的情况下，也可以增加感光元件的感光度。 但要注意感光值增加之后图片的噪点也会增加，你要知道你的相机在感光值增加到什么程度时产生的噪点就不可接受了。
Alternatively, increase the sensitivity of the sensor to hand-hold the camera, but be aware at what setting, noise (unattractive speckled patterns) will become a problem with your sensor.
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