Conversion to find out how big a 3:4 picture will be on a 16:9 TV? - AVS Forum
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post #1 of 5 Old 08-28-2001, 09:07 PM - Thread Starter
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Does anyone know a sort of math equation that will tell you how big a 3:4 image will be presented on a 16:9 TV? And vice-versa?
What I mean, is there a way that I can know how big a SD signal with grey bars on the side will be on a 16:9 TV just by the size of the 16:9 screen.
And the same thing only for a 3:4 TV viewing a 16:9 program with bars on top and bottom?
Example: A 38 inch 16:9 has a 3:4 picture of 32 inches. (This is just an example of the top of my head and is no way right.)
This would really help me decide on what would be the right size for a RV. Seeing how I really don't want to take out a tape measure for every HDTV Best Buy, Sears, etc. has.
Sorry if this is a little confusing.http://www.avsforum.com/ubb/confused.gif All feedback will be helpful.
I tried this myself, but I'm terrible in Math so of course I was way wrong; but, I know that every single person in this forum is a certified genius, http://www.avsforum.com/ubb/smile.gif so I hope someone could share their intellect with me.

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post #2 of 5 Old 08-28-2001, 09:38 PM
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How's this?
http://www.cavecreations.com/tv2.cgi

No need to do the math. Just plug in the numbers and it will tell you what you need to know.

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post #3 of 5 Old 08-29-2001, 05:03 PM - Thread Starter
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Thanx it works great.

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"Asking if an HDTV is too big, is like me asking you if the diamond on your wedding ring is too big." -- My dad's response to my mom's question about my 65" HDTV.
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post #4 of 5 Old 08-31-2001, 01:10 PM
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I did the math. http://www.avsforum.com/ubb/biggrin.gif

A X" 16:9 TV with side bars equals to a 0.817X" 4:3 TV;

A Y" 4:3 TV letter boxed equals to a 0.918Y" 16:9 TV.

Now, if you can do the x.82 and x.92 math in your head, all the better.

Hal
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post #5 of 5 Old 09-02-2001, 05:19 AM
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Try your math this way 4:3 = 12:9 vs 16:9.

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