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VovIK
Я почитал тоже и нашел следующий абзац:
This cost advantage is even more significant when you consider the way a CMOS sensor works. The Active Pixel CMOS image sensors used in digital imaging are very similar to a CCD sensor, but with one major difference — supporting circuitry is actually located alongside each light receptor, allowing noise at each pixel to be canceled out at the site. Further to this, other processes can be integrated right into the CMOS image sensor chip, eliminating the need for extra chips — things such as analog/digital conversion, white balancing, and more can be built into the CMOS sensor. This reduces cost of supporting circuitry required, as well as camera complexity, and also power consumption, as does the fact that CMOS sensors require a significantly lower voltage than CCD sensors. CMOS sensors themselves also claim lower power consumption than CCD sensors, with one manufacturer claiming their CMOS sensors draw some 10x less power than equivalent CCD sensors.
То есть (вольный перевод) поскольку CMOS очень дешев - то на каждом пикселе можно поставить усилитель, и шум практически будет отсутствовать. А CCD сначала двигает заряд, а затем уже считывает полную строку. То есть CMOS меньше шумит!
Хотя у CMOS есть другие недостатки - они как-то решаются.
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