Most modern digital cameras use a CMOS image sensor because CMOS sensor technology in recent years has leapfrogged CCDs. 
An example is the fact that they incorporate an integrated circuit, helping reduce costs. CCD is still in use for cheap 
low entry cameras, but weak in burst mode. Both types of sensor accomplish the same task of capturing light and converting 
it into electrical signals.

Each cell of a CCD image sensor is an analog device. When light strikes the chip it is held as a small electrical charge 
in each photo sensor. The charges in the line of pixels nearest to the (one or more) output amplifiers are amplified and 
output, then each line of pixels shifts its charges one line closer to the amplifier, filling the empty line closest to the 
amplifiers. This process is then repeated until all the lines of pixels have had their charge amplified and output.

A CMOS imaging chip is a type of image sensor that has an amplifier for each pixel instead of the few amplifiers of a CCD, 
this results in less area for the capture of photons than a CCD, but this problem has been overcome with microlens in front 
of the photodiode that direct light (that would have otherwise hit the amplifier and thus not be detected) into the photodiode. 
Some CMOS imaging sensors also use Back-side illumination to increase the number of photons that hit the photodiode.

CMOS sensors can potentially be implemented with fewer components, use less power and provide faster readout than CCD sensors.

Another hybrid CCD CMOS architecture, sold under the name sCMOS consists of CMOS readout integrated circuits (ROICs) that are 
bump bonded to a CCD imaging substrate – a technology that was developed for infrared staring arrays and now adapted to silicon based 
detector technology. Another approach is to utilize the very fine dimensions available in modern CMOS technology to implement a CCD 
like structure entirely in CMOS technology. This can be achieved by separating individual poly-silicon gates by a very small gap. 
These hybrid sensors are still in the research phase and can potentially harness the benefits of both CCD and CMOS image sensors.