![]() ![]() Most cameras also need their own light source.Ĭameras that are mounted on a fixed stand require the reading material to be placed under the camera and moved across and down the page. Lower cost video magnifiers often use cameras that have a fixed focus and cannot vary magnification or camera-to-target distance. ![]() In most of these systems, magnification level and focus are set after choosing a comfortable and functional working distance between the camera and the material to be viewed. ![]() Cameras with zoom lenses provide variable magnification. A video magnifier, or closed-circuit television (CCTV) system, uses a stand-mounted or handheld video camera to project a magnified image onto a video monitor, a television (TV) screen, or a computer monitor.
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