The rule of thumb is 5 times the hight of the screen. Your screen would be about 21" tall. Ideal distance would be 105" or just about 9 feet. You are right, and that is just about the distance I sit from my 42" plasma. Looks perfect to mee too.
...I have a 42" plasma in a room about 16' x 12'. The exact viewing distance from the couch to the TV screen is 9'.
My wife complains that the TV is too big for the room and the viewing distance. I say that's silly and find the view absolutely perfect.
Are there any rules of thumb on such things and are any of these rules dependant on the technology employed by the TV?
Any thoughts/input would be greatly appreciated.

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