Does CCD size matter?

In general, the larger CCD means a bigger light-collecting area and therefore better performance in low-light conditions with less noise. However, this rule is very inexact and it doesn't hold in many cases. The trend is to lower the CCD size because it also lowers the costs. ...

How do digital cameras work?

In contrast to a conventional film camera, in a digital camera the light is focused onto an image sensor called a CCD (charge coupled device). The CCD is a collection of light-sensitive photosites that produce an electric charge when struck by light. These charges are converted into numbers that are stored in the memory (usually on a memory chip). From there, the whole image can be displayed, sent to a computer, or even printed directly on a printer. ...

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