CCD digital sensors used in photography create low noise, high quality image with more pixels. CMOS usually have lower quality, lower resolution, and lower sensitivity.
CMOS is an on-board, battery powered semiconductor chip inside computers that stores information and is also used as image sensors (CMOS sensor)
CMOS stands for Complimentary Metal Oxide Semiconductor. CMOS is a technology for constructing integrated circuits. It is widely used in Microprocessors, Micro Controllers, Static RAM. It is also used in Analog circuits such as image sensors. CMOS was patented in 1967 by Frank Wanlass. CMOS is sometimes referred as COS-MOS i.e complementary-symmetry metal-oxide-semiconductor.
The CMOS sensor in a camera is a light sensor that takes in the light of an image and turns it into electrons, the electrons are then turned into pixels so that they can be viewed. CMOS stands for Complimentary Metal-Oxide Semiconductor.
Sensors are devices that can take the light let into the camera and convert the bits of data into colored pixels, "digitalizing" it, if you will. The two sensors are CCD (charge coupled device) and CMOS (complimentary metal-oxide semiconductor) sensors. They each have their pros and cons and are used in different cameras for different reasons.
You do not need CMOS circuits per se but that's the way many modern components are manufactured. Complementary metal-oxide-semiconductor (CMOS) is a technology for constructing integrated circuits. CMOS technology is used inmicroprocessors, microcontrollers, static RAM, and other digital logic circuits. CMOS technology is also used for a wide variety of analog circuits such as image sensors, data converters, and highly integrated transceivers for many types of communication.
Firstly CMOS and CCD are manufactured differently, yet they perform the same process. CMOS sensors are more susceptible to noise, whereas, CCD sensors create high quality, low-noise image. This then makes the difference between them. So CMOS generally has lower pixels and longer battery life, plus a cheaper option, CCD uses more power and has higher pixels, and is more expensive. So depending on you budget, and what you are looking for in a camera. This could help you make up your mind of how much you can afford to spend, and what quality of camera you are looking for.
An image sensor (detector) is a device that converts an optical image to an electric signal. It is used mostly in digital cameras and other imaging devices. Early sensors were video camera tubes but a modern one is typically a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) active pixel sensor.
Camera sensors record the image when light hits it. http://www.digicamhelp.com/camera-features/camera-parts/sensors/
increasing conductivity the intersection of flux lines with surface increases so sensitivity increases
Selection criteria for sensors: it depends on operating principal, sensitivity, range, accuracy, errors, stability and reliabilty, availability, cost, power consumption, environmental conditions, .... Affy...
following are some static characteristics of sensors accuracy precision repeatibility range resolution sensitivity dead zone