The shapes and sizes of video cameras differ dramatically. Ever wonder why cameras have so many different form factors? In video, it all comes down to useability in a given type of production.
Video cameras may be optimized for specific applications. Most camera components have been miniaturized, allowing cameras to be configured to preference in modules.
Cameras now range in size from large digital cinema cameras outfitted for general purpose cinema-type production to smart phones with excellent built-in video cameras. There are also run-and-gun ENG cameras, studio cameras, 35mm film-style cameras and sub-miniature GoPro action cameras.