Gotcha: Projector Resolutions

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For years, XGA resolutions have dominated both notebook displays and digital projectors, making it easy for mobile presenters to use a laptop with their office projector. Now, however, with both business and consumer notebook displays shifting from the 4:3 aspect ratio to 16:9 (and as such, from XGA resolution to WXGA), projectors have failed to keep up: Only a handful of projector models sold today are WXGA.

If your notebook's resolution and your projector's native resolution differ, your image will be interpolated, a process that can introduce unsightly artifacts and distortion, especially in text documents. If your wide-screen laptop lacks a way to toggle among resolutions via a single button, at least make sure that you can adjust the notebook's resolution downward in software to match the native resolution of the projector you're using.

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