The first, characteristic of much early television, is what might be called a live broadcast , where the camera feeds real time images directly to a screen for immediate observation; in addition to live television production, such usage is characteristic of security, military/tactical, and industrial operations.
The second is to have the images recorded to a storage device for archiving or further processing; for many years, videotape has been the primary format used for this purpose, but optical disc media, hard disk , and flash memory are all increasingly used.
Professional video cameras , such as those used in television and sometimes film production; these may be studio-based or mobile. Such cameras generally offer extremely fine-grained manual control for the camera operator, often to the exclusion of automated operation.
Closed-circuit television cameras, generally used for security, surveillance, and/or monitoring purposes. Such cameras are designed to be small, easily hidden, and able to operate unattended; those used in industrial or scientific settings are often meant for use in environments that are normally inaccessible or uncomfortable for humans, and are therefore hardened for such hostile environments (e.g. radiation, high heat, or toxic chemical exposure).
Digital cameras which convert the signal directly to a digital output; such cameras are often extremely small. These cameras are sometimes incorporated directly into computer or communications hardware, particularly mobile phones , PDAs , and some models of laptop computer .
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Oldest and Most Expensive Camera: Daguerrotype Inventor: Lois Daguerro Price: starting bid $132,00O