Most new desktop video magnifier models boast that they offer high-definition (HD) quality. This can refer to the resolution of either the camera or the display, but both elements must support HD for this feature to be beneficial to a viewer. HD itself is an elusive term. HD specs are expressed in several ways, and there is no hard and fast rule for what constitutes HD. You will most often see HD resolution expressed in terms of video mode, as in 720p, 1080p, or higher. Full HD usually translates to 1080p. There are multiple ultra-HD video modes, too, with even greater video resolution. Vendors often adopt terminology that differentiates their own HD products from the competition, or even from other models in their own lineup. Low Vision International (LVI), for example, sells its MagniLink Zip magnifiers with either a 720p (HD) or 1080p (full HD) camera. All HD modes put more pixels on screen than does standard definition, allowing the camera to capture a sharper image, and the monitor to display one, too. This comes in handy at high magnification levels, when text or small objects under your camera could otherwise look fuzzy. Crisp text is also very important when you use custom color modes to enhance the contrast of the screen image. We'll have more to say about color modes later.
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