Just as with film, a digital camera has to control the amount of light that
reaches the sensor. The two components it uses to do this, the aperture and shutter speed, are also present on conventional cameras.

Aperture: The size of the opening in the camera. The aperture is automatic in most digital cameras, but some allow manual adjustment to give professionals and hobbyists more control over the final image.
Shutter speed: The amount of time that light can pass through the aperture. Unlike film, the light sensor in a digital camera can be reset electronically,
so digital cameras have a digital shutter rather than a mechanical shutter.

Digital cameras have over the last 5 years come on leaps and bounds and buying a digital camera today is no longer an expensive experience with camera's starting from as little as £50.00.

Choosing a digital camera that will suit your needs depends completley on
those needs, so consider how you will use the camera, in what conditions,
how many pictures would you generally take in a period of time all these and many other considerations need to be made when deciding on which camera suits you. Please do not hesitate to call or mail if you have any questions
about your prospective purchase.