Lechner Distance
The Lechner Distance chart illustrates the optimal viewing distances at which the human eye can best process the details a HDTV resolution has to offer. For example, the optimal viewing distance to a 42 inches (110 cm) 1080 HD TV is 5.5 feet (170 cm).
Mr. Lechner researched the typical distance between a viewer and their television screen by taking measurements in many American homes. The median distance compiled from all his data came out to 9 feet (2.7 m). Given this distance, a 1080 HD TV with a screen size of 69 inches (180 cm) would deliver the optimal viewing resolution.
Read more about this topic: Bernard J. Lechner
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