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. ...

What digital camera accessories do I need?

One major upgrade needed by almost all digital cameras is a higher capacity memory card. You should buy as large a memory card as your camera can accept, as the memory cards that are included with the cameras are usually not nearly big enough to hold a good number of high quality pictures. Other accessories worth considering are a battery charger, rechargeable batteries, tripod, and a camera case. ...

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