Size vs PPI

Gerard

Gerard

Gerard

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At the minute i'm considering a 4k screen, the 3 shortlisted ones (in no particular order) are:

Asus PB287Q 28"
BenQ BL3201PT 32"
Acer 4k2k B326HK 32"


Been looking for reviews on these and so far the only PPI info i can find is for the Asus screen at 157ppi according to Asus, the Benq site just states "the highest PPI for the most detailed on-screen viewing quality", while the ACER site doesn't say anything about ppi, but the linus tech tips review stated a PPI of 137 .

Obviously the more ppi the sharper the image, so is it an automatic assumption that the bigger the screen for monitors the higher the ppi? And how does that affect the size of objects on screen? I've seen pics of the Asus screen and the windows icons looked very small, whereas on the Acer they looked much bigger, no idea if scaling was used so not exactly a telling comparison.

But if the Asus has more at 27" than the benq or the acer at 32 would that = a somewhat sharper image on the Asus screen despite the size difference? :confused::confused:

ed: after using the PPI calc apparently 137.68 is what a 32" should have, so does that put it on par with the 20ppi more of the asus?
 
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You're looking at ~137 for the 32 inchers vs ~157 for the Asus which is 28.

I have no hands on experience with 4k but surely at that res how much sharper could the image actually be on a 28 vs 32?

To be fair I had a 32 inch 1440p and compared to my 27 1440p it looked horrendous but 4k is another kettle of fish.

On another note, PPI aside, surely you'd be better going with the IPS paneled BenQ/Acer as opposed to the TN Asus?
 
The higher the PPI the better and sharper the image will look. Best to go with the highest PPI with the smallest screen you can get away with using for the best image quality.
 
I have the asus PB287Q 4k screen and it's great, however there is noticeable room for improvement PPI wise. For gaming it's not noticeable at all but fonts still require subpixel antialiasing in order to look sharp and in some scenarios still not as good as they could be. For example, comparing the sharpness of the asus 4k to my 1080p 5.5" phone the phone looks obviously superior. That said, if you're moving from a 1080p 24" to a 4k 28" the difference is incredible.
 
Tom B said:
I have the asus PB287Q 4k screen and it's great, however there is noticeable room for improvement PPI wise. For gaming it's not noticeable at all but fonts still require subpixel antialiasing in order to look sharp and in some scenarios still not as good as they could be. For example, comparing the sharpness of the asus 4k to my 1080p 5.5" phone the phone looks obviously superior. That said, if you're moving from a 1080p 24" to a 4k 28" the difference is incredible.
Click to expand...

I have noticed the same even on 23.8" UHD screens. It is partly down to the screen surface, not just the pixel density. :)
 
GMac11 said:
You're looking at ~137 for the 32 inchers vs ~157 for the Asus which is 28.

I have no hands on experience with 4k but surely at that res how much sharper could the image actually be on a 28 vs 32?

To be fair I had a 32 inch 1440p and compared to my 27 1440p it looked horrendous but 4k is another kettle of fish.

On another note, PPI aside, surely you'd be better going with the IPS paneled BenQ/Acer as opposed to the TN Asus?
Click to expand...

VEGACORTEZ said:
The higher the PPI the better and sharper the image will look. Best to go with the highest PPI with the smallest screen you can get away with using for the best image quality.
Click to expand...


So far ive only used TN panels, 3 of them in eyefinity Benq g2222 hdl 21.5 screens. Just fancy a change and want to get the best iq i can. Obviously a 32" would be a bigger bump in terms of size but if the image is a bit sharper on the 28" it might be worthwhile going for that instead. The linus review was very positive about the acer, just gong back and forth from that to the asus at the minute.
 
i come from a 1440p IPS 27ich 780ticlassy, to the BenQ BL3201PT Titan X i do like the build of the monitor the menus are really good can change a lot on them
i did want the Philips BDM4065UC/ but its out of stock every where and was unsure as its a VA panel (mines mainly for gaming)

i feel the image quality with AA off (will put it on when i get my 2ed TITAN X) in games is really good i do like it Far cry 3 is amazing now with the change

i really would not go for a 28ich its to small gaming is so much better for me in 32ich
i was thinking 32ich could be to small for 4k but im just trying to look into it now

with scaling in win 8.1 you can have things what ever size you want you can have some stuff bigger some smaller or scale them all the same
after a bit of messing with mine im happy with that
was unsure when i first put it on
here some pics of my desktop im happy with the size its very simler to my 1440p 27ich
think i was just used to this size
http://imgur.com/zOZ86bX,kTebMne#0
http://imgur.com/zOZ86bX,kTebMne#1
 
Tom B said:
I have the asus PB287Q 4k screen and it's great, however there is noticeable room for improvement PPI wise. For gaming it's not noticeable at all but fonts still require subpixel antialiasing in order to look sharp and in some scenarios still not as good as they could be. For example, comparing the sharpness of the asus 4k to my 1080p 5.5" phone the phone looks obviously superior. That said, if you're moving from a 1080p 24" to a 4k 28" the difference is incredible.
Click to expand...

I even tried the dell 27" 5k monitor which looked better than 4k 28" but even then it's not as sharp as some high end phones and small retina ipads. I sit very close and love retina stuff but it did look damn nice. Just need it to be TN and have g-sync i can't go back to judder and i don't like IPS. The new TNs are brilliant.
Like you said though 1080p 24" looks laughable on games now compared to 4k i could never play pc games at that res ever again.
 
Well gonna be ordering tuesday, either the Asus or the Acer, just have to figure if a larger screen is worth it over 20ppi less in sharpness.
 
Gerard said:
Obviously the more ppi the sharper the image, so is it an automatic assumption that the bigger the screen for monitors the higher the ppi? And how does that affect the size of objects on screen? I've seen pics of the Asus screen and the windows icons looked very small, whereas on the Acer they looked much bigger, no idea if scaling was used so not exactly a telling comparison.

But if the Asus has more at 27" than the benq or the acer at 32 would that = a somewhat sharper image on the Asus screen despite the size difference? :confused::confused:
Click to expand...

You need to do some background reading as you don't seem to understand what you are referring to.

PPI is pixels per inch (square inch), so the more pixels per square inch, the sharper your image will appear....

A larger screen will not have a larger PPI, it will have a lower PPI given the same resolution.

With regards to a 4k screen, the resolution is pretty massive, even on a 32" it would look fantastic. You just need to decide if you are willing to pay for the extra screen size, understanding that you wont gain any screen real estate over a 28".
 
I used a 28 inch 4k for about a month but found everything far too tiny to use it regular (my normal monitor is a 1440p 27")

I now use one of the Phillips 40" 4k which is perfect, it seems to be almost the same size pixel wise as the 1440p one.
 
I have a 28" 4K and it is impossible to use with applications with no decent 4K scaling. :( 32" would be better.
 
Acme said:
I have a 28" 4K and it is impossible to use with applications with no decent 4K scaling. :( 32" would be better.
Click to expand...

I'm on a 32" UHD screen and you still require scaling for day to day work. There will still find applications that don't scale at all. Photoshop has an experimental scaling setting. You live with some of these limitations but 4K content is amazing and the extra space on screen of applications makes it worth it.

This is worth a read for those going over to 4K:

http://nativedigital.co.uk/site/2015/03/setting-up-a-4k-monitor-on-a-windows-pc/
 
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BAcon said:
You need to do some background reading as you don't seem to understand what you are referring to.

P
Click to expand...

I am aware of what im referring to, i know how ppi works its just not that easy to find official information on what the ppi is on some of these screens. The benq page doesn't state for their monitor and neither does the acer. Its only review sites that are bringing this info up so i can only go by them as to if its accurate or not.
 
Gerard said:
I am aware of what im referring to, i know how ppi works its just not that easy to find official information on what the ppi is on some of these screens. The benq page doesn't state for their monitor and neither does the acer. Its only review sites that are bringing this info up so i can only go by them as to if its accurate or not.
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Work it out yourself?? it's really simple.

It's just GCSE mathematics, you know the size of the screen diagonally, the ratio of height to width (the resolution tells you this), with this you can work out the vertical and horizontal dimensions of the screen. With this you can find out the area of the screen. You already know the number of pixels, 2560x1440.

Meh never mind!
 
BAcon said:
Work it out yourself?? it's really simple.

It's just GCSE mathematics, you know the size of the screen diagonally, the ratio of height to width (the resolution tells you this), with this you can work out the vertical and horizontal dimensions of the screen. With this you can find out the area of the screen. You already know the number of pixels, 2560x1440.

Meh never mind!
Click to expand...



3840x2160 actually :p
 
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