Digital camera, device for creating digital recordings of images. Texas Instruments Incorporated patented the primary filmless electronic camera in 1972. In 1981 Sony Corporation brought out a billboard electronic model, which used a “mini” computer disc drive to store information captured from a video camera. because the cost of electronic components declined and therefore the resolution of the cameras improved, the Eastman Kodak Company began selling professional digital cameras in 1991. Kodak and Apple Computer, which supplied the software for transferring the digital images to a private computer, introduced the primary consumer model in 1994. Digital cameras soon gained market share, gradually relegating most film camera sales to cheap, disposable, single-use models. However, with the introduction of smartphones containing ever more-advanced cameras, camera sales fell by 90 percent within the 2010s.Unlike film cameras, digital cameras don’t have chemical agents (film) and sometimes lack a viewfinder, which is usually replaced by a liquid display (LCD). At the core of a camera may be a semiconductor unit , like a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS), which measures candlepower and colour (using different filters) transmitted through the camera’s lenses. When light strikes the individual light receptors, or pixels, on the semiconductor, an electrical current is induced and is translated into binary digits for storage within another digital medium, like non-volatile storage (semiconductor devices that don’t need power to retain memory).
Digital cameras are commonly marketed by their resolution in megapixels (millions of pixels)—for example, a 24.2-megapixel camera features a resolution of 6,016 by 4,016 pixels. Kodak developed the primary megapixel camera in 1986; it could produce a film-quality 5 × 7-inch (12.5 × 17.5-cm) print.Camera, in photography, device for recording a picture of an object on a light-sensitive surface; it’s essentially a light-tight box with an aperture to admit light focused onto a sensitized film or plate.A brief treatment of cameras follows. For whole shebang , see photography, technology of: Cameras and lenses. cf. camera . รีวิวกล้อง
Though there are many sorts of cameras, all include five indispensable components: (1) the camera box, which holds and protects the sensitive film from all light except that entering through the lens; (2) film, on which the image is recorded, a light-sensitive strip usually wound on a spool, either manually or automatically, as successive pictures are taken; (3) the sunshine control, consisting of an aperture or diaphragm and a shutter, both often adjustable; (4) the lens, which focuses the sunshine rays from the topic onto the film, creating the image, and which is typically adjustable by moving forward or back, changing the focus; and (5) the viewing system, which can be break away the lens (usually above it) or may operate through it by means of a mirror.The earliest camera was the chamber , which was adapted to creating a permanent image by Joseph Nicéphore Niepce and Louis-Jacques-Mandé Daguerre of France within the 1820s and 1830s. Many improvements followed within the 19th century, notably flexible film, developed and printed outside the camera. within the 20th century a spread of cameras was developed for several different purposes, including aerial photography, document copying, and research project .