Digital camera
Digital Camera
A Digital Camera (pronounced: /ˈdɪdʒ.ɪ.təl kəˈmɛr.ə/) is a device that captures photographs in digital memory. Most cameras produced today are digital, and while there are still dedicated digital cameras, many more cameras are now incorporated into mobile devices, portable touchscreen computers, which can, among many other purposes, use their cameras to initiate live video-telephony and directly edit and upload imagery to others. However, high-end, high-definition dedicated cameras are still commonly used by professionals.
Etymology
The term "Digital Camera" is derived from the words "digital", which means data in binary form, and "camera", which is a device for recording visual images in the form of photographs, film, or video signals.
Related Terms
- Image sensor: An image sensor or imager is a sensor that detects and conveys information used to make an image. It does so by converting the variable attenuation of light waves (as they pass through or reflect off objects) into signals, small bursts of current that convey the information.
- Memory card: A memory card, flash card or memory cartridge is an electronic flash memory data storage device used for storing digital information.
- Photography: Photography is the art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.
- Pixel: In digital imaging, a pixel, pel, or picture element is a physical point in a raster image, or the smallest addressable element in an all points addressable display device.
- Resolution: Image resolution is the detail an image holds. The term applies to raster digital images, film images, and other types of images.
- Shutter speed: In photography, shutter speed or exposure time is the length of time when the film or digital sensor inside the camera is exposed to light, also when a camera's shutter is open when taking a photograph.
- Aperture: In optics, an aperture is a hole or an opening through which light travels.
- ISO speed: ISO speed is a system of numerical film speed ratings used in photography.
External links
- Medical encyclopedia article on Digital camera
- Wikipedia's article - Digital camera
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