3 CCD DSLR - next development ?

Started Jan 12, 2006 | Discussions thread
Eric Fossum
Eric Fossum Senior Member • Posts: 1,399
Re: Foveon sensitivity to light....

whoops...didnt actually answer the question.

The CMOS active pixel sensor was designed to take advantage of all the things we knew worked well in a CCD (e.g. pinned photodiode) and yet avoid the problems of a CCD which center around charge transfer. By putting the amplifier in each pixel ("active pixel") the signal could be read out of the sensor across wires instead of by using charge transfer. This saves power (important in cell phones and interplanetary spacecraft) and allows for fast readout (most high speed cameras use CMOS active pixel sensors now), reduced sensitivity to radiation (spacecraft again), and most importantly, manufacturability on process fabrication lines that are like mainstream microelectronics vs. the specialized line for CCDs. This makes them affordable. It also brought image sensor technology back to the USA, for those of us that care about that.

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