Feature

CCD

CMOS

Sensitivity

Higher fill factor means higher light sensitivity. The light sensitive elements are in the surface of the sensor.

Electronic shutters reduce the aperture only slightly.

Lower fill factor means lower light sensitivity, because circuits are integrated in between the pixels.

The required transistors for global shutters reduce the aperture.

Image Quality

Better uniformity as the same electronic generates the value for each pixel. Only a few transistors are involved and generate lower noise.

Each circuit has its own characteristics, which generates fixed pattern noise in the image. Several transistors with individual differences generate higher noise.

Windowing

Always the whole sensor needs to be read out.

Single pixels can be addressed.

Speed

Higher read out clock reduce image quality of a CCD chip. Image processing is done outside the chip.

Clocking and digitization is done in the CMOS-chip, image processing can be done also inside.

System design

Good electronics around the CCD is necessary to get good images. Electronic affects the image quality directly.

Digitization is done in the CMOS-chip itself. You need less and easier components around. Image quality is mainly influenced by the chip.