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Will 1080p and 1440p playing a 1080p source look the same?

post #1 of 11
Thread Starter 
Hi guys I have a question.

Suppose you have a 1080p 27 inch monitor and a 1440p 27 inch monitor.

A 1080p 27 inch monitor is 81.59 PPI.
A 1440p 27 inch monitor is 108.79 PPI.

If you set the resolution of the 1440p 27 inch to 1080p which makes the pixels larger would it not decrease the PPI from 108.79 to 81.59?
I am going to assume a group of pixels will emulate one larger pixel as you lower the resolution?
[While the physical PPI doesnt change lowering the resolution gives the effect of having lower PPI???]

If this is the case wouldnt a 1080p source look the same on both monitors because you are essentially spreading 1920x1080 pixels over the same physical length and width of a monitor thats 27 inches?

Ive read online from basic googling that two screens SAME SCREEN SIZE but if one is native 1080p and one 1440p the native 1080p will look BETTER than the 1440p. They didnt provide an explanation why this is the case.

Isnt it the PPI that determines the crispness and clarity of the image on the screen?
That being the case shouldnt both 27 inch 1080p and 1440p [set to 1080p] [emulate 1080p worth of pixels / upscale] have the same image clarity?

Thanks.
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post #2 of 11
Great question. I am subbed.

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post #3 of 11
Anything other than the monitor's native resolution looks worse. It's always a bit fuzzy no matter what. If we are talking about video some scaling filters in video players can improve it but nothing as true native resolution.
post #4 of 11
Quote:
Originally Posted by Laserlight View Post

Anything other than the monitor's native resolution looks worse. It's always a bit fuzzy no matter what. If we are talking about video some scaling filters in video players can improve it but nothing as true native resolution.

This guy is dead on the money. Of course unless your running 1080p HD on an ultrawide its going to look the same as it would on a 1080p HD because the vertical and horizontal res is the same. Try to set your res to 720 on your 1080 monitor and look how awful it ends u looking. You can do it but it just doesnt scale right i think is the main issue.
    
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post #5 of 11
Thread Starter 
I understand that. Anything less than native is worse.

What I would like to know is it worse if you compare it to something similar as I suggested.

1440p running 1080p will look worse because it can look BETTER but if comparing to monitors with same physical length and width with same resolution means they would have the same PPI.
It would be one native 81.9 PPI vs a 1440p emulating 81.9 PPI.

I want to know WHY it would look worse if that is the case.

Fuzziness is because of low PPI that visible at 2-3 feet from your eyes.

1080p 27 inch is slightly fuzzy at 2-3 feet.
1080p 50 inch is incredibly fuzzy if you are 2-3 feet from it due to much less PPI.

Id assume upscaling a video thats 1080p onto a 1440p simply does what I mentioned a group of pixels act as "one" pixel to emulate lower resolution/lower ppi giving the effect that the monitor is 1080p
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post #6 of 11
Thread Starter 
It should scale well because they are the same aspect ratio. 16:9.

It looks awful because 720p at 27 inches has awful PPI.

It emulates 54.39 PPI when a 1080p 27 has 81.59 PPI.

720p on my 27 inch 1080p monitor should LOOK the same as a native 720p 27 inch monitor in theory because they have the same PPI.

frown.gif Why is information about this so hard to find on the net. frown.gif
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post #7 of 11
For LCD screens, anything that is not the native resolution will look worse than the native resolution. Imagine a 27" grid with 1920x1080 pixels. The gridlines are hard set, and there's no changing the physical structure of this grid. Within each square, you have three smaller grids that shine three different colors, rgb. That is also a physical structure that cannot be changed. On an operating system, you can change the logical structure of the pixels by forcing the pixels to act like a larger pixel, but because you cannot change the physical structure of the pixels, there will be scaling issues. Well, for most monitors.

With CRT monitors, there is no native resolution as the monitor is able to change the electron size in order to represent a different resolution. In other words, there is no set amount of pixels like there are on LCD/LED/Plasma displays. Those electrons can only get so large or small, so you are limited in that aspect.

On a side note, not all pixels are created equal, and I'm not talking about the different panel technologies (IPS, VA, TN, etc.). The physical shape of a pixel can be different from one panel to another. One panel can have slightly more rectangular pixels than another, which would give you a slightly stretched representation of whatever you're looking at (CADers and Photoshoppers be aware wink.gif ). For instance, a square shown on a screen could look more rectangular, or a circle more ovular. However, in most, if not all cases, this is an extremely minor issue that is barely perceptible unless you have a "correct" monitor beside it. One example of such a panel is the 40" panel used in the Philips and Korean monitors. It has rectangular pixels.

On another side note (now, I'm just ranting):

In order to best utilize a monitor's resolution and size, you have to factor in your eyesight quality and how far away you are from the monitor. For instance, let's say you have 20/20 eyevision, and the farthest you can move away from the monitor without stuff starting to blur is 3 ft on a 27" 1080p monitor. If you were to sit 3ft away from a 27" 1440p monitor, you would not be utilizing the extra pixels due to the fact that at that distance, they are too small to distinguish. That distance is best suited for a 27" 1080p monitor, in other words. If you are nearsighted, you will have to move closer to the screen than normal in order to compensate for your weaker vision. If you have better than normal vision, then you could get away with sitting farther out, or having a higher PPI monitor. There are some calculators out there that can help you determine what PPI best for you given your eyevision quality and how far you are away from the monitor. I use this one.

While 1440p will always have a higher resolution and more real estate than a 1080p monitor, you really have to find a size that suits your seating position, eyevision, and usage habits. PPI is just half the story. For example, I love the pixel density of a 27" 1080p monitor. Due to the size and resolution of that type of panel, I am better able to clearly read text and stuff from 4ft away. I couldn't do the same with a 1440p monitor without zooming in or sitting closer. Because how I sit (slouching, reclining, fetal position, etc.), as well as how far I sit, is always different, having a PPI that can be utilized with various seating positions and distances is extremely important to me. Because of my positive experience using a 27" 1080p monitor, I wanted more of the same, so I got a 55" 4k monitor. Due to the sheer size, I'm able to squirm around in my chair even more tongue.gif
post #8 of 11
Isn't there more to this though? Integer scaling?
I have seen with my own observation (not really scientific) that a 1080p source on a 4k screen will look almost identical to a 1080p on a native screen if the scaling engine is good. Vizio M43-c1 for example that I have.
Now, a monitor without this tv scaling engine that is 1440p and doing 1080p content, well I haven't seen one that isn't soft looking. This is not an even ratio.
Maybe you guys have?
post #9 of 11
Quote:
Originally Posted by airisom2 View Post

For LCD screens, anything that is not the native resolution will look worse than the native resolution. Imagine a 27" grid with 1920x1080 pixels. The gridlines are hard set, and there's no changing the physical structure of this grid. Within each square, you have three smaller grids that shine three different colors, rgb. That is also a physical structure that cannot be changed. On an operating system, you can change the logical structure of the pixels by forcing the pixels to act like a larger pixel, but because you cannot change the physical structure of the pixels, there will be scaling issues. Well, for most monitors.

With CRT monitors, there is no native resolution as the monitor is able to change the electron size in order to represent a different resolution. In other words, there is no set amount of pixels like there are on LCD/LED/Plasma displays. Those electrons can only get so large or small, so you are limited in that aspect.

On a side note, not all pixels are created equal, and I'm not talking about the different panel technologies (IPS, VA, TN, etc.). The physical shape of a pixel can be different from one panel to another. One panel can have slightly more rectangular pixels than another, which would give you a slightly stretched representation of whatever you're looking at (CADers and Photoshoppers be aware wink.gif ). For instance, a square shown on a screen could look more rectangular, or a circle more ovular. However, in most, if not all cases, this is an extremely minor issue that is barely perceptible unless you have a "correct" monitor beside it. One example of such a panel is the 40" panel used in the Philips and Korean monitors. It has rectangular pixels.

On another side note (now, I'm just ranting):

In order to best utilize a monitor's resolution and size, you have to factor in your eyesight quality and how far away you are from the monitor. For instance, let's say you have 20/20 eyevision, and the farthest you can move away from the monitor without stuff starting to blur is 3 ft on a 27" 1080p monitor. If you were to sit 3ft away from a 27" 1440p monitor, you would not be utilizing the extra pixels due to the fact that at that distance, they are too small to distinguish. That distance is best suited for a 27" 1080p monitor, in other words. If you are nearsighted, you will have to move closer to the screen than normal in order to compensate for your weaker vision. If you have better than normal vision, then you could get away with sitting farther out, or having a higher PPI monitor. There are some calculators out there that can help you determine what PPI best for you given your eyevision quality and how far you are away from the monitor. I use this one.

While 1440p will always have a higher resolution and more real estate than a 1080p monitor, you really have to find a size that suits your seating position, eyevision, and usage habits. PPI is just half the story. For example, I love the pixel density of a 27" 1080p monitor. Due to the size and resolution of that type of panel, I am better able to clearly read text and stuff from 4ft away. I couldn't do the same with a 1440p monitor without zooming in or sitting closer. Because how I sit (slouching, reclining, fetal position, etc.), as well as how far I sit, is always different, having a PPI that can be utilized with various seating positions and distances is extremely important to me. Because of my positive experience using a 27" 1080p monitor, I wanted more of the same, so I got a 55" 4k monitor. Due to the sheer size, I'm able to squirm around in my chair even more tongue.gif

Damn i think this is the best explanation ive ever seen. Should be stickied somewhere. I have 15/20 vision and i can tell you that for someone whose anal and has good vision gaming is a pita haha. I notice tearing, artifacts, and screen flicker so easily. I can tell you right away that video quality went down when going from a 23in HD to a 29in ultrawide even though the ppi is identical.
Quote:
Originally Posted by DanzoMeteor View Post

Isn't there more to this though? Integer scaling?
I have seen with my own observation (not really scientific) that a 1080p source on a 4k screen will look almost identical to a 1080p on a native screen if the scaling engine is good. Vizio M43-c1 for example that I have.
Now, a monitor without this tv scaling engine that is 1440p and doing 1080p content, well I haven't seen one that isn't soft looking. This is not an even ratio.
Maybe you guys have?

This is very true for TVs but gaming monitors arent TVs they dont have scalers and what not. Its the same way a 1080p source upscaled to 4k doest realy look like true 4k. Just doesnt scale
    
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post #10 of 11
Quote:
Originally Posted by bluej511 View Post

Damn i think this is the best explanation ive ever seen. Should be stickied somewhere. I have 15/20 vision and i can tell you that for someone whose anal and has good vision gaming is a pita haha. I notice tearing, artifacts, and screen flicker so easily. I can tell you right away that video quality went down when going from a 23in HD to a 29in ultrawide even though the ppi is identical.
This is very true for TVs but gaming monitors arent TVs they dont have scalers and what not. Its the same way a 1080p source upscaled to 4k doest realy look like true 4k. Just doesnt scale

So what about the Nvidia GPU? I see there's scaling options in the video card. I think anyways that its more safe to get either 1080p or 4k screens. It seems 2560 x screens have trouble.
I guess the video card companies don't have a way to support the thousands who bought 1440p screens eh
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