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4. High Definition > 31. Properly Size Your HD Image

Properly Size Your HD Image

Once you’ve got your HD signal coming in, you’ll need to ensure that it appears properly on your television set. Otherwise, you’ll miss important detail and lessen the HD experience.

Many are the stories of a consumer buying an expensive HD-ready wide-screen TV [Hack #29] , spending hundreds on killer programming [Hack #28] , and still seeing only 70% or 80% of the overall image. The choice seems to be between black bars on the side [Hack #13] or an image that clearly extends below the bottom of the screen and above the top. Some careful tweaking can take care of this once and for all.

HD programming needs to form an exact 16 x 9 image, form-fitted to your TV’s 16 x 9 screen. Unfortunately, this almost never is set up for you out of the box. RPTVs are overscanned quite heavily from the factory, meaning you are missing substantial parts of your picture. This process of reducing the overscan is not for the faint of heart, however, because doing so hoses your geometry and convergence, all of which have to be totally recalibrated [Hack #62] afterward.


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