text: There are a number of things that a digital camera has with a film camera, view finder, lens focal length range, max aperture etc.\n\nThere are some things that are unique to digital cameras.  Resolution is measured in points of color called pixels.\n\nLight sensitivity is controlled by the size of between 1 and 3 chips that contain the pixels called CCDs.  the bigger the CCD, the bigger the pixel and the more light sensitive.\n\nJust like there are diff rent sizes of film for classic camera there are different sizes of memory for digital cameras, both the physical size and capacity can change.  In a film camera one might use 35mm film that comes in 20 or 36 shot rolls.  in a digital camera one might use a compact flash card that could be any were from 128K to several megabytes.