The Future of Sensor Technology: CCD vs CMOS
By Max Howroute
These days it is hard to find a camera that doesn't use the CMOS sensor technology. Many think there's no doubt that CMOS is far superior and the discussion has ended. In fact, the debate goes on. CCD and CMOS sensors do the same job of capturing light and converting it to electrical signals resulting in a digital photograph. However there are fundamental differences in design and operation. The CCD technology is more mature and advanced, CMOS is more cost effective and trying to catch up with CCD. Don't get me wrong, both architectures are fine, what really equally matters for any sensor is the size. As of today, larger sensors capture more light, thus producing better results under many light conditions. As I've mentioned in my previous posts, this might change with the advancement of nano technology in the future. But right now the sensor size is all that really makes a difference in output quality when in comes to the sensor comparison. The fight between CMOS and CCD is purely emotional at this stage. Both technologies are useful and got their ups and downs. In CMOS for every pixel there are three MOSFET's (metal-oxide semiconductor field-effect transistors). So you share them between four pixels. CCD relies on charged coupling. CMOS is more suitable for high speed future applications. The CCD however currently used in more commercial applications, where cost is usually not a huge factor. So if you are thinking of purchasing a digital camera and thinking which sensor to pick, don't even worry about it. The major part of your camera buying decision should be the sensors size and lens selection. Both are equally important in digital cameras land.