Buying Digital Cameras on the Web

An electronic digital camera works a lot like film camera in that light comes in through the lens and it is captured to create a picture. The way the image is captured is what makes an electronic digital camera different than a film camera. With a film camera, you press the shutter button which opens the shutter letting in the light. The light entering the lens is exposed to the film and causes chemical reactions within the film to create your photograph. In a dslr camera the picture is captured with an image sensor that converts the light rays into electronic signals which are then kept in a file in the buffer memory.