This is ensured through the use of a mechanical shutter. Another type of CCD designed especially for digital cameras, yields even better digital pictures. Because the image is captured and read in one movement, a mechanical shutter is superfluous. This, in turn, enables extremely high shutter speeds to be achieved. Since each pixel in the picture corresponds to one of the three types of CCD pixels, only one colour is recorded for each dot.
Special software is used to calculate and complete the missing colour data.
The better the software program, the better the resulting picture will be. An additional improvement in picture quality is achieved by a relatively simple trick. Before buying a digital camera, you should think about what you will use it for. However, if you intend to print out hard-copy photographs you should look into purchasing a high resolution camera. The camera's resolution is determined by the number of photosensitive sensors on the CCD chip.