CCD and CMOS, What’s the Difference?

The sensor works like the “film” of the CCTV camera, it is it that transforms light into electron, converting information into image. Therefore, the better the quality of the sensor, the more realistic and faithful the color and image transmitted by the camera. The main sensors available on the market are the CCD (coupled charging device) and CMOS (complementary metal oxide semiconductor).

CCD and CMOS, What's the Difference

These sensors used in CCTV cameras are the same used in digital cameras, and when this type of camera began to become popular the difference in quality of the CCD sensor was immensely superior to the CMOS models according to Gametate, whose former advantage was only in its low cost, especially in low light environments. But this differentiation does not make sense anymore, considering the development of CMOS sensors.

CCD sensors such as the Sony Effio have good illumination quality and are often used in analog cameras with infrared, but in models with lower resolution there may be distortion in the color, presenting on the monitor something different from the actual color, which can harm in monitoring people for example who may be wearing a one-color outfit on the monitor that is not the same as the person in fact is wearing.

State-of-the-art CMOS sensors are being used in cameras such as HDCVI, delivering excellent image resolution in low or high light environments, working very well with infrared on. As the cost of production is lower than the market trend is that the production of cameras with CMOS sensor should increase in the coming years. But today the technologies are equivalent in quality of image.

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