Traditional Culture Encyclopedia - Photography and portraiture - What do you mean there is noise in the enlarged photo? What do you mean? What is noise?
What do you mean there is noise in the enlarged photo? What do you mean? What is noise?
To put it simply, the photosensitive elements (CCD, CMOS) of a digital camera have to carry out a series of processing after receiving the optical signal. In the process of processing, some noise will inevitably appear, which is the noise point. Noise is also related to the grade and use of the camera. The bigger the photo, the more obvious the noise. It is more intuitive to look at the picture below:
When zooming in to 50%:
When zooming in to 100%:
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