The main articles are all you wanted to know about IP surveillance. Part 3. Sensitive matrices and image quality
What's the quality of the video camera?
The main component of any camera is not important, analogue or IP cameras, which defines 90 per cent of the image produced by a camera, is a light-sensitive matrix.
The quality of the camera image - its ability to operate under low illumination or street conditions - depends primarily on the characteristics of the lighting matrix. The good matrices are expensive, so the cameras on their basis cannot be too cheap.
Fresh-sensitive matrices (sensors) are two main types of CCD (CD) and CMOS (CMR).
CCDCharge (-Coupled Device) matrix is a secular matrix produced by the " charge-bearing devices " technology.
CMOS (Complementary Metal-Oxide-Semiconductor) matrix is a light-sensitive matrix manufactured by technology of a metal-oxide-polluter structure (MLC).
CMOS is much cheaper than CCD matrimians. Based on CMOS technology, sensors with a large number of megapixels can be made, and they will be low (compared to CCD). But CMOS-matter noises can't provide an image of the quality of CCD-matter cameras, although recent progress has been made.
Since CMOS-Matres are cheaper than CCD, IP-camer manufacturers are very often using cheaper CMOS sensors instead of standard CCD monitors, especially those " famous " producers for which IPs are by-products. While the CMOS sensors have lower sensitivity and not too good colour transfer, their use makes the device very cheap, as these sensors are " all in the same microchemical " with digital output. So, the only plus of such a decision is his price, which is usually the first thing that inexperienced buyers look at.
What are the basic characteristics of the light-sensitive matrix?
The basic characteristics of the light-sensitivity matrix are the authorization in piccels and television lines, size, sensitivity, type of matrix and type of plug.See also: