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Cameras designed to obtain still images either one by one or in a limited sequence of images each time the user presses a switch. These cameras typically include one or more lenses positioned in the front of the camera, a shutter button that operates the camera and frequently also triggers a light flash, and controls to modify the focus, optical zoom, and time; the camera also includes a film or an image sensor for film and digital cameras respectively. Dedicated photographic still cameras using digital technology or less frequently film techniques are available for a variety of applications (e.g., ophthalmology, surgery); autoclavable cameras intended mainly for use in surgical procedures are also available.
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