How digital cameras work

The basic principle of digital camera work is simply the conversion and transmission of light-electricity-digital signal, that is, the light signal is converted into electric current through the photosensitive element, and then the analog electric signal is converted into a digital signal. The information obtained after the chip is processed and filtered is restored to the dynamic picture we see.

The photosensitive element of a digital camera can convert light into electric charge and convert it into a digital signal through an analog-to-digital converter chip. There are two main types: one is the widely used CCD (charge coupling) element; the other is CMOS (complementary metal). oxide conductors) devices.