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Aspect ratio / scrren size calculator (1 Viewer)

Father John A

Stunt Coordinator
Joined
Jul 22, 2002
Messages
146
Anyone know of a calculator that will give relative picture area depending on screen size and aspect ratio?

i.e.: If I had a 50" and was watching LOTR 2.35:1, what would the pciture size be?
 

ScottHH

Stunt Coordinator
Joined
Oct 24, 2002
Messages
174
There is at least one Calculator on the internet to do it for you, but Mark showed you the math behind the calculators (aka The Pythagorean Theorem a²+b²=c²).

Assume this is the TV.


We know the ratio of the height and width of all TVs:
If it's a 16:9 TV, height a=9x and width b=16x
If it's a 4:3 TV, height a=3x and width b=4x

Here's the diagonal of the TV:


Now we can substitute x for a and b in Pythagorean Theorem:
If we assume your 50" TV is a 16:9 widescreen set, we get:
(9x)²+(16x)²=50²

Mark then solves this equation for x (a little algebra), and calculates x=2.724

So a 50" diagonal 16:9 has the following dimensions:
16x=43.6"
 

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