As you can see above, the maximum SMPTE-recommended seating distance is 6.8 feet, which yields a viewing angle of 30 degrees. Enter that info into the corresponding fields and click on the Calculate button. For example, let's say you have a 50-inch, 16:9 TV. You can also use this calculator if you already have a TV and want to know the optimum seating distance for that screen size. So my advice to all TV shoppers is to buy a larger screen than they are probably considering and to use the site linked above to determine the best screen size for their seating distance. Most folks sit farther from the screen than you do-typically 10 feet or more-and they buy TVs with much smaller screens than they should-often 42 to 50 inches, which is smaller than you should get even at 7 feet. The optimum screen size for a given seating distance is much larger than most people think. For your seating distance of 7 feet, you want a 16:9 screen that measures about 52 inches diagonally to achieve the minimum SMPTE-recommended viewing angle of 30 degrees or about 63 inches for the THX-recommended viewing angle of 36 degrees. Then, click on the Calculate button and look at the Screen Size section. When you open this page, scroll down to the Viewing Distance Calculator section, enter your seating distance in feet, and click on the 16:9 button to specify the screen shape. Is there a site that can help determine the right screen size for a given seating distance? In my case, the distance from my couch to the TV is 7 feet.
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