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Old Mar 28, 2007, 05:32 PM   #1
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Dreven
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Default How to figure LCD 4:3 aspect size compared to Tube TV size?

I've been happy with my gaming/dvd 30" LCD in a spare bedroom for over a year now. In the living room is my 10 year old pre-marriage Sony 32" tube TV. I never got executive accountant approval to upgrade that one and my wife mostly watchs it anyway. That TV finally blew a gun.

Now, I've ordered a DirectTV upgrade to HD Direct TV with a dual tuner HD DVR for the living room.(but) I know my wife is in for the shock that normal TV channels will look like crap (most channels will still be non HD of course).
A) a lot of screen will be missing
B) Zoom version #1 is going to look OK but clip 10% of the picture
C) Zoom version #2 is going to not clip 10% but look distorted

What I'm having a hard time figuring out is how to determine what the 4:3 aspect square will compare to on a square TV.

Like:
37" LCD in 4:3 = Picture size of a 26" Standard Tube TV
40" LCD in 4:3 = Picture size of a 30" Standard Tube TV


Trust me... being able to say "honey, this LCD is going to give you a square picture for normal channels the same size (or 2" less - whatever) than the tube TV you're use to.


Thanks for any info
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Old Mar 28, 2007, 05:49 PM   #2
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4:3 is 4:3 whether its on LCD or a regular tube tv...
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Old Mar 28, 2007, 06:17 PM   #3
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Default

If you mean 16:9 ... you have to get a 40 inch 16:9 television to get the same 4:3 image size. You can do the math or just multiply the tube tv's diagonal size by 1.2238 according to http://geeklimit.com/2006/05/01/reco...-new-screentv/ Doing the math yourself will also give you 39.1616 for a 32 inch 4:3 tv.

Last edited by dOoT : Mar 28, 2007 at 06:22 PM.
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Old Mar 28, 2007, 09:52 PM   #4
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I think he means 16:9, since I have never heard of or seen a 4:3 LCD tv over 30 inches.
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Old Mar 29, 2007, 09:53 AM   #5
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im sure he wants to know what size would a 4:3 image be on a x-size 16:9 LCD..
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Old Mar 29, 2007, 10:44 AM   #6
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Default

That is pretty basic math.

16:9 aspect:
Diagonal x 0.49091 = Height

4:3 apsect:
Height x 1.667 = Diagonal


16:9 Diagonal * 0.49091 * 1.666(unlimited 6s)= 4:3 Diagonal

reduces to

16: Diagonal * 0.81818333 (unlimited 3s) = 4:3 Diagonal

Qucik calc:

26 21,27276658
32 26,18186656
42 34,36369986
54 44,18189982
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Old Mar 29, 2007, 12:29 PM   #7
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You can also use TV Calculator. It is a very handy website.
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