Determining Display Aspect Ratio *spawn

A friend of mine bought it on day 1 and it seemed to run fine on his ultrawide (32:10)
first time I heard about that aspect ratio. Which monitor does your friend have?

The Witcher 3 has also support for 32:9 ultrawide, but Shadow of the Tomb Raider looks much more appealing to me in that regard. For whatever reason, be how the camera moves or whatever, TW3 has this fish eye look to the sides, which isn't as pronounced in Shadow of the Tomb Raider.
 
3840 / 1200 = 3.2

3.2 x 10 = 32
3.2 x 9 = 28.8

So 32:10 is accurate. Or 16:5.
thanks for the explanation. I have a question. Where does the 10 come from? Applying your numbers to 3840x1080 I get:

3840 / 1080 = 3.5
3.5 x 10 = 35
3.5 x 9 = 31.5

From those numbers I don't know how to get the 32:9 aspect ratio. Am I missing something?
 
I have a question. Where does the 10 come from?
Well I was merely testing with 10 and 9 to see whether they are accurate because 32:10 and 29:9 had been mentioned.

3840 / 1080 = 3.5555...
32:9 is perfectly accurate for that resolution.
 
Could a mod move the aspect ratio posts to a separate discussion in the most suitable place as its making the starfield thead off topic
thanks...
 
dont think it's that simple Shifty
The web site says divide height by width so lets do that with the res 1920x1080
that gives 1.777777777777778 I know that the aspect is 16:9 but 1.777777777777778 is not 16:9 so having got 1.7 ect what do I do next ?

if I take your example of 3840 x 1200 and follow the same steps
3840 : 1200
384 : 120 Divided both numbers by 10 (why 10?)
96 : 30 Divided both numbers by 4 (why have you switched from 10 to 4?)
32 : 10 Divided both numbers by 3 (now youve switched from 4 to 3 why?)
16 : 5 Divided both numbers by 2 (now it's a 2)

I will now apply your method to 1920x1080
1920:1080
192:108 Divided both numbers by 10
48:27 Divided both numbers by 4
16:9 Divided both numbers by 3

so the actual formula is :
Divide both numbers by 10
Divide both numbers by 4
Divide both numbers by 3

Why its those numbers (10,4,3) I don't know
Edit :
Just made an interesting discovery 10x4x3 = 120
so just divide both numbers by 120
eg :
1920/120 = 16 1080/120 = 9 hence 16:9
3840/120 = 32 1200/120 = 10 hence 32:10

so the formula to calculate aspect ratios is divide both numbers by 120 am I wrong ???
 
Bugger I'm wrong just tried it with 640x480 which is 4:3
640/120 = 5.3* 480/120 = 4 hence 5.3*X4

* denotes re-occurring
 
if I take your example of 3840 x 1200 and follow the same steps
3840 : 1200
384 : 120 Divided both numbers by 10 (why 10?)
96 : 30 Divided both numbers by 4 (why have you switched from 10 to 4?)
32 : 10 Divided both numbers by 3 (now youve switched from 4 to 3 why?)
16 : 5 Divided both numbers by 2 (now it's a 2)


so the formula to calculate aspect ratios is divide both numbers by 120 am I wrong ???
I'm simplifying by factors each time. Firstly I recognise they are both in the 10x table, so divide both by 10. Then they are clearly in the 3x table so I divide both number by 3. Keep going until you have the simplest ratio. A resolution of 700 x 280 would have an aspect ratio of:

700 : 280 - both in the 7x table
100 : 40 - both in the 2x table
50 : 20 - both in the 10x table
5 : 2
 
Why its those numbers (10,4,3) I don't know

Arbitrary numbers, you are just trying to get it down to a pair of numbers with no common divisor.

So, for 3840x1200 you could start with dividing by 40 since both are obviously divisible by 40. You could also start with 30 since both are obviously divisible by 30. 120 would work as a starting point as well if you knew that 384 was divisible by 12 and it's obviously divisible by 10 so just start with dividing by 120 instead of 10 then 12.

Lots of ways to go about it. Basically start with a number you know each side is evenly divisible by then do the same with the result and repeat until each side is no longer evenly divisible by the same number.

Regards,
SB
 
What your basically saying is this
To calculate an aspect ratio as W:H, divide your width and your height by their greatest common factor (GCF), and write it as W:H, where W is units of width divided by the GCF and H is units of height divided by the GCF.
Where GCF is the greatest common factor
and when you think about it (eg: if you had to write a computer program to calculate the GCF of 2 user submitted numbers) it's not the biggest challenge in the world but then again is not as simple as a single line of code either
there's a certain amount of brute forcing it (eg: test every number from 1 to user submitted number 1, test every number from 1 to user submitted number 2 (or submitted number 1 if its smaller) then compare results for the highest match
 
maybe but thats not always a trivial thing to do
especially if I give a you resolution made of 2 prime numbers :ROFLMAO:
That would be the aspect ratio.

Also you can set one to '1' like cinema does 1.85 : 1 or 2.39 : 1

Resolution 859 x 461, aspect 859 : 461, or ~1.86 : 1
 
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