A digital camera uses an electronic digital sensor to capture still or moving images. The vast majority of cameras sold nowadays are digital and other devices, such as Smartphones or Tablet Computers often incorporate a digital camera.
Digital cameras generally use a lens with a variable diaphragm to focus light onto an image sensor. The diaphragm and shutter admit the correct amount of light to the sensor, as with a film camera, but the sensor is electronic rather than chemical. Unlike film cameras, digital cameras can display images on a screen immediately after capturing them and they can store images in memory. Many digital cameras can also record video with sound and some can perform basic image editing. Digital cameras come in a range of formats varying from simple Compact Cameras to sophisticated Digital Single Lens Reflex (DSLR) models.
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