Video camera

Types and Uses of Video Cameras:
– Professional video cameras offer manual control and use three sensors.
– Camcorders combine camera and recording device, now digital.
– CCTV cameras are small, easily hidden, used for security.
– Webcams stream live video feed to a computer.
– Smartphones have built-in video cameras, some capable of 4K resolution.

History of Video Cameras:
– Transition from mechanical to all-electronic designs.
– Solid-state image sensors like CCD and CMOS replaced tube technologies.
– Advances in video compression enabled practical digital video cameras.
– Distinction between professional video and movie cameras blurred.
– Digital video cameras prevalent by the early 21st century.

Recording Media Evolution:
– Introduction of tape systems improved video recording.
– Betacam integrated tape recorder into the camera, creating camcorders.
– Direct video recording attempts date back to 1927.
– Ampex’s Quadruplex videotape in 1956 was the first commercially released system.
– Evolution of video recording from analog to digital formats.

Lens Mounts in Video Cameras:
– Video cameras may have built-in lenses or use interchangeable lenses with various mounts.
– Different mounts like Panavision PV and Arri PL for movie cameras, Canon EF and Sony E for still photography.
– Specialized mounts like S-mount designed for applications like CCTV.

Related Concepts in Video Camera Technology:
– Image sensors like CCD and CMOS, their importance, and technological evolution.
– Audiovisual quality assessment factors, methods, and advancements.
– Multimedia data hiding concept, applications, techniques, challenges, and future directions.
– History of videotape, its impact, technological advancements, and transition to digital formats.
– Video production technology insights, importance, lens mounts overview, and considerations for choosing the right mount.

Video camera (Wikipedia)

A video camera is an optical instrument that captures videos, as opposed to a movie camera, which records images on film. Video cameras were initially developed for the television industry but have since become widely used for a variety of other purposes.

Video cameras are used primarily in two modes. The first, characteristic of much early broadcasting, is live television, where the camera feeds real time images directly to a screen for immediate observation. A few cameras still serve live television production, but most live connections are for security, military/tactical, and industrial operations where surreptitious or remote viewing is required. In the second mode the images are recorded to a storage device for archiving or further processing; for many years, videotape was the primary format used for this purpose, but was gradually supplanted by optical disc, hard disk, and then flash memory. Recorded video is used in television production, and more often surveillance and monitoring tasks in which unattended recording of a situation is required for later analysis.