How were TV size ratios defined and why did we go from 4:3 to 16:9?
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IIRC, 4×3 mimic old playhouses, so that was what was adopted in early TV. As movie theaters gained popularity in the 70’s and 80’s, the presentation was widened to 16×9. Then came HD TV standards in the late 1990’s and things where standardized. Sort of.
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