And I mean in terms of square inches? I for the life of me can't find height and width of 3.5 inch and 4.3 inch screens.
I suspect, even though diagonally, it is only .8 inch longer, the surface area could be as much as 50% more.
someone pls do the maths.
Well, your guess is pretty much spot on. Assuming same aspect ratio between screens, the 4.3 inch has 51% more real estate than the 3.5 inch.
4.3 / 3.5 = 1.23 (scale factor)
1.23 squared gives you the surface area scale factor = 1.51, or as a percentage, 51% larger.
The GS II has a 2.2" x 3.7" screen giving it an area of 8.14 square inches.
A 3.5" diagonal screen could have an area of nearly 8.9 square inches if it were square, or 3.35 square inches if it were 3.35" tall and 1" wide. You can't calculate the area of a theoretical screen with the diagonal measurement alone.
Its all theory in practice its just a bit bigger as is the phone compared to SGS 1 side by side or held .
jje
((4.3 * ((4.3 / 800) * 480)) / 3.5) / ((3.5 / 800) * 480) = 1.50938776
so it's 50,9% larger
iPhone 4 (3.5 in):
326 ppi
960 height, 2.94 in
640 width, 1.96 in
5.76 square in
Galaxy S II (4.27 in):
218 ppi
800 height, 3.67 in
480 width, 2.20 in
8.07 square in
8.07 / 5.76 x 100 = 140
i.e. The Galaxy S II's screen has 40% more area.
kcaz said:
The GS II has a 2.2" x 3.7" screen giving it an area of 8.14 square inches.
A 3.5" diagonal screen could have an area of nearly 8.9 square inches if it were square, or 3.35 square inches if it were 3.35" tall and 1" wide. You can't calculate the area of a theoretical screen with the diagonal measurement alone.
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Click to collapse
+1 diagonal "length" is a poor predictor for screen area. This gave me a huge headache shopping for monitors, some 24" screens turned out "smaller" than 23" ones.
Related
The SGS2 retains it's 800x480 resolution. Yet it further increases its screen size.
That's the only factor that's hampering me from purchasing one.
Even the Atrix gets a heightened resolution and yet over a smaller area.
Anyone else facing this dilemma?
Well the Atrix has pentile matrix sub-pixels like the SGS had, but the SGS2 doesn't.
So the effective resolution should be pretty similiar.
More here.
I'm thinking of getting a Nexus S over the Samsung S2...Do you think the screen on the Samsung S2 is a huge jump from the Super AMOLED Nexus S? Is it really worth it...
Long story short, the SGS2 has more sub-pixels than the Atrix, and double the SGS.
Captivate, XDA Premium
Lol. Off-putting seems to be going viral.
Here is another way to look at it.
The PPI for the SGS 2 is 218.49, the PPI for the SGS is 233.24, and the PPI for the Atrix is 275.36. BUT, if we add in the extra sub-pixels from the SuperAmoled Plus display the theoretical PPI is 327.74. The iphone 4 has a PPI of 326, so it is actually sharper than an iphone 4.
Didn't realize it was so sharp but when you put it that way, it makes me want this phone even more. =)
ryude said:
Here is another way to look at it.
The PPI for the SGS 2 is 218.49, the PPI for the SGS is 233.24, and the PPI for the Atrix is 275.36. BUT, if we add in the extra sub-pixels from the SuperAmoled Plus display the theoretical PPI is 327.74. The iphone 4 has a PPI of 326, so it is actually sharper than an iphone 4.
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correct me if i'm wrong but PPI is PPI - sub pixels contribute nothing to PPI so your theory above is totally wrong.
And all the people just repeating jibberish about how more sub pixels make a display clearer/ significantly better are clueless about resolution.
kona786 said:
correct me if i'm wrong but PPI is PPI - sub pixels contribute nothing to PPI.
And all the people just repeating jibberish about how more sub pixels make a display clearer/ significantly better are clueless about resolution.
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It's a theoretical boost to PPI, because it does actually increase sharpness and reduces eye strain due to clearer text/images. Sub-pixels do actually make the display clearer.
Here's a video showing Super Amoled Plus vs an iphone 4 (IPS display).
http://www.youtube.com/watch?v=SDIEUv-xkfI
ryude said:
Here is another way to look at it.
The PPI for the SGS 2 is 218.49, the PPI for the SGS is 233.24, and the PPI for the Atrix is 275.36. BUT, if we add in the extra sub-pixels from the SuperAmoled Plus display the theoretical PPI is 327.74. The iphone 4 has a PPI of 326, so it is actually sharper than an iphone 4.
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Just all wrong. The iphone 4 uses a regular rgb stripe arrangement. Its definitely the highest ppi out.
Samoled+ its simply a standard rgb layout.
Sent from my MB860 using Tapatalk
eallan said:
Just all wrong. The iphone 4 uses a regular rgb stripe arrangement. Its definitely the highest ppi out.
Samoled+ its simply a standard rgb layout.
Sent from my MB860 using Tapatalk
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Wrong.
Super AMOLED Plus displays are an upgrade to Super AMOLED. They use a real-stripe subpixel matrix and not pentile - and so has 50% more sub-pixels. The PPI is a bit larger but Samsung will soon make them at much higher resolutions. Super AMOLED Plus displays are also thinner, brighter and use 18% less energy than the older Super AMOLED displays.
Super AMOLED has 2 sub-pixels per Pixel. So, for a resolution of 800*480, it has 768000 sub-pixels.
The Super AMOLED Plus has 50% more sub-pixels than Super AMOLED with PenTile Matrix. So, for a resolution of 800*480, it has 1152000 sub-pixels.
A Standard Matrix RGB use 3 sub-pixels per pixel. So, for a resolution of 800*480, it has 1152000 sub-pixels. Exactly the same number as the Super AMOLED Plus.
Retina Display has a resolution of 960*640 with 3 sub-pixels per pixel wich gives 1843200 sub-pixels.
ryude said:
Wrong.
Super AMOLED Plus displays are an upgrade to Super AMOLED. They use a real-stripe subpixel matrix and not pentile - and so has 50% more sub-pixels. The PPI is a bit larger but Samsung will soon make them at much higher resolutions. Super AMOLED Plus displays are also thinner, brighter and use 18% less energy than the older Super AMOLED displays.
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Click to collapse
Both the iphone screen and SAMOLED+ have the same amount of subpixels the iphone has a higher ppi but the color are better on SAMOLED+
scores87 said:
Both the iphone screen and SAMOLED+ have the same amount of subpixels the iphone has a higher ppi but the color are better on SAMOLED+
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Yes, the iphone has more pixels but from my experience side by side with a captivate and an iphone 4 the sgs 2 will blow the iphone out of the water.
ryude said:
Yes, the iphone has more pixels but from my experience side by side with a captivate and an iphone 4 the sgs 2 will blow the iphone out of the water.
Click to expand...
Click to collapse
It comes to personal preference in the end really. I prefer the my Desire's AMOLED, while my friend prefers the iPhone's display over his SGS' SAMOLED.
ryude said:
Wrong.
Super AMOLED Plus displays are an upgrade to Super AMOLED. They use a real-stripe subpixel matrix and not pentile - and so has 50% more sub-pixels. The PPI is a bit larger but Samsung will soon make them at much higher resolutions. Super AMOLED Plus displays are also thinner, brighter and use 18% less energy than the older Super AMOLED displays.
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Click to collapse
I'm quite right. Samoled+ is awesome but your explanation in relation to the iphone 4 (or really and lcd except the atrix) was incorrect.
Sent from my MB860 using Tapatalk
Does that mean that the SGS had been having the poorest resolution all along? Seeing that it has only 2 sub pixel.
ShadedCyan said:
Does that mean that the SGS had been having the poorest resolution all along? Seeing that it has only 2 sub pixel.
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Not really, it's not that simple. It has a resolution of 800x480. Each of those pixels can be made of whatever type of sub-pixel layout the decide. The atrix looks quite a bit different than the normal SAMOLEDs. The SGS2's subpixel resolution is lacking I suppose. Typically people can't make out individual subpixels.
Too put it another way:
Red and blue were 240x400 on the SGS. Green was the full 480x800.
On the SGS 2, all three will be 480x800.
On my phone, when the battery is low, the solid red battery meter looks like checkerboard.
Also, who cares about the iPhone's screen... It's just going to shatter anyway with it's wanna-be gorilla glass.
Captivate, XDA Premium
Why can't I take pictures in 16:9 when I have the resolution set at 3264:2448?
Sent from my GT-I9100 using XDA Premium App
hmm...anyone?
The reason why you can't get 16:9 ratio is because 3264:2448 is 4:3 ratio.
(Try dividing by the GCM = 816 and you'll get 4:3)
Aspect ratio is the ratio of the horizontal pixels to the vertical pixels; this means the aspect ratio is directly related, and it's not possible to change the aspect ratio without changing the total horizontal to vertical pixel count.
kohiiou said:
The reason why you can't get 16:9 ratio is because 3264:2448 is 4:3 ratio.
(Try dividing by the GCM = 816 and you'll get 4:3)
Aspect ratio is the ratio of the horizontal pixels to the vertical pixels; this means the aspect ratio is directly related, and it's not possible to change the aspect ratio without changing the total horizontal to vertical pixel count.
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But I can change to 16:9 ratio with my brothers desire hd in 3264:2448 resolution.
Sent from my GT-I9100 using XDA Premium App
Maybe you should read these:
http://en.wikipedia.org/wiki/Display_resolution
http://en.wikipedia.org/wiki/Aspect_ratio_(image)
And it is 5:3 (or 15:9) instead of 16:9 EDIT: 16:9 would be little wider. But becaus Samsung have 800x480 resolution, 5:3 will be max that you can go.
8M: 3264/2448=1.3333 = 4:3 (aspect ratio)
W6.5M: 3264/1968 = 1.65853659 ~1.66 (15:9 = 5:3)
And because samsung have 800x480 resolution wich means: 800/480 = 1.66666667 = 15:9 = 5:3
So W6.5M means that you now use full screen.
Yufina said:
Maybe you should read these:
http://en.wikipedia.org/wiki/Display_resolution
http://en.wikipedia.org/wiki/Aspect_ratio_(image)
And it is 5:3 (or 15:9) instead of 16:9 EDIT: 16:9 would be little wider. But becaus Samsung have 800x480 resolution, 5:3 will be max that you can go.
8M: 3264/2448=1.3333 = 4:3 (aspect ratio)
W6.5M: 3264/1968 = 1.65853659 ~1.66 (15:9 = 5:3)
And because samsung have 800x480 resolution wich means: 800/480 = 1.66666667 = 15:9 = 5:3
So W6.5M means that you now use full screen.
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Click to collapse
just to be clear, the W6.5M and 8M doesn't stand for megapixels, right?
Nope. Those are megapixels. As you can see:
3264*2448 = 7 990 272 ~8Megapixels
3264*1968 = 6 423 552 ~6.5Megapixel
Also more Megapixels dosen't always mean better camera or image
EDIT: Also I think that W means "Wide" so you can be sure that those will use 5:3 aspect ratio (or just full screen) instead of 4:3.
Yufina said:
Nope. Those are megapixels. As you can see:
3264*2448 = 7 990 272 ~8Megapixels
3264*1968 = 6 423 552 ~6.5Megapixel
Also more Megapixels dosen't always mean better camera or image
Click to expand...
Click to collapse
ah ok, thanks I'm gonna use W6.5M as i cant stand 4:3, I just hope that there wont be much difference between the 6.5 and 8 megapixels.
I also hate 4:3, because it's sound as old-fashoned as it is . And today everything are so wide. But as for 6.5M, I think that max print size will be ~11 x 6.5″, so i think it will be enought (at least for me).
EDIT: if you want 300dpi print
Just divine by dpi:
3264/300= 10.88 inches
1968/300= 6.56 inches
Hi guys,
I currently have a 9.7 inch ICS tablet which has a pixel density of 132, just like ipad 1 & 2. I thought it was not that bad until I got a phone with pretty high ppi (HTC One V), and now it suddenly makes my tablet look so cheap when I look at it. So I would like a tablet with higher ppi, and I thought how about an 8 inch tablet with 1024 x 768 resolution? So I tried the ppi calculation online, and it gave me 160. are 160ppi and 132 ppi a big difference in text sharpness? Currently, on my 9.7 tablet, even the blue digital clock in the status bar is somewhat pixelated.
Also I like to use 4:3 tablet in a portrait mode only, so when I'm web browsing with my 9.7 inch tablet in portrait mode, some small texts are kind of readable, BUT uncomfortably... like you can go on Yahoo desktop website in portrait mode, and try to make out the smallest text in that website, and it's kind of garbled looking. So I was wondering, IF PPI is higher, EVEN THOUGH the screen is smaller, will that make the texts sharper for the same webpages? If I had both 8 inch and 9.7 tablets, I could test it out, but I don't, so I need expert's knowledge..
Also, 8 inch tablet is cheaper and lighter than 9.7 or 10.1 tablets so I am considering this option more now.
Please answer my questions above!
Thank you.
Don't get too star struck, htc devices are meant to beautiful and only other htc devices can give you that premium look and feel, ( no company tops htc in the beauty department). My htc sensation resolution is 540×960 and has a 256 pixel density and 240 dpi. It come down to the quality of your tablet, by increasing your dpi (almost like zooming in) you will see more pixels (BAD!), but you will see the difference is you increase the ppi, however it depends on your display. Right now the top android phones (htc one s/v and sgs2 & 3 and etc) have better displays than tablets and those 7 to 8 inch tablets aren't recommended also. They are build to be budget friendly and the display quality won't be too good either. Maybe you should get a better android tablet (asus transformer prime the BEST) or iPad+Retina Display= Big Smile
I thought this was very interesting, somewhat common sense to some of us geeks/nerds/smarties out there, and worth a share.
Origin: http://blogs.tribune.com.pk/story/16554/is-the-samsung-galaxy-s4-really-worth-it/
Despite the amazing features in recent mobile phones that include, high speed quad core processors, large screen sizes, high-fidelity Graphic Processing Units (GPUs) and innovative designs, the mobile phones manufacturers are desperately trying to surpass each other.
A number of marketing tactics are being used to get us all excited, and persuade us to upgrade our phones.
Due to the tremendous advancements in hardware and software technology and the challenges posed by a very competitive market, the smart phone manufacturers are left only with the screen resolution to boast about and as an immediate eye-catching feature for a potential upgrade.
Samsung is already making a big deal about the full High Definition (HD) resolution of its Galaxy S4 introduced this month. Although the S4 is not the first phone to be equipped with an HD resolution, the terrific success of the S2 and S3 makes it an appealing get-as-soon-as-possible feature for Galaxy lovers.
If you are charmed by the HD resolution and intend on throwing extra money to upgrade your phone to S4, let us first analyse if a full HD smart phone screen is really worth draining your wallet.
Resolution is the prime determinant of a screen’s clarity. HD resolution refers to a High Definition screen having either 1280 x 720 pixels (720p) or 1920 x 1080 pixels (1080p/full-HD) spread along the width and height of the smart phone’s screen.
The pixel is the elementary area of illumination on the screen. The image displayed is composed of pixels. Therefore, higher the number of pixels, the sharper and crisper an image appears on the screen.
For an immediate comparison, you can check the resolution of your old smart phone (For example a Nokia 6600, 176 x 208 pixels) and that of a recent smart phone (like the Samsung Galaxy S3, 720 x 1280 pixels). You will immediately notice that the high resolution produces a much clearer and sharper image.
Nevertheless, resolution is not the only factor responsible for a sharper screen. Keeping the resolution the same and increasing the screen’s size separates the pixels, thus resulting in lost sharpness.
What really matters for determining a screen’s quality is the number of pixels packed in a given area. The term Pixel Per Inch (PPI) represents how many pixels there are in one inch of a screen’s area; the larger the number, the better the screen’s quality.
As an example, Nokia 6600 launched in 2003 has a PPI density of 130, whereas, Apple’s iPhone 4, sensationalised and marketed by the brand name Retina Display, has a PPI of 330. This produces a much sharper and vibrant image on the screen and makes other older phones look lacklustre.
Increasing the resolution does increase the PPI, provided that the screen size is not increased significantly. Two smart phones having the same screen sizes but different resolutions will have different figures for PPI.
Does it mean increasing the PPI indefinitely will produce even sharper images on the screen? The answer is no.
Our eyes can determine the quality of the contents on a screen if the pixels are distinguishable at the normal viewing distance. The reason why Apple called their iPhone 4 screen ‘Retina Display’ was that the 326 PPI pixel density was so high that individual pixels were indistinguishable to the human eye at the normal viewing distance. However, Retina Display is no longer an industry-leading figure.
HTC was one of the companies to develop a display beating that of the iPhone 4 with HTC Rezound (342 PPI). Nevertheless, if you compare the screens of Iphone 4 and HTC Rezound, I can bet you won’t be able to tell the difference.
The reason is that the human eye cannot distinguish the difference in PPI when the figure reaches a saturation point of about 300 (slightly exaggerated, otherwise some studies suggest a threshold of 250 PPI). Therefore, having a PPI of more than 300 will not make any difference to normal human eye unless you use a magnifying glass or have the screen pressed up against your eyeballs to see the subtle difference (of course you don’t want to do that).
Even for people with 20/20 vision, a full HD resolution would be a waste because most people’s eye can’t resolve sharpness above 250 PPI. The same goes for observing the photos quality. The pixel details in a photograph is always spread over more than one pixel and never perfectly aligned with the pixel structure of the display. So it will not matter whether you view the photographs on a 1080p or 720p display; they will appear the same. If you come across a smart phone having a PPI above 350, safely take it as a marketing stunt. It is not going to make the smart phone’s screen any sharper.
Consequently, a full HD (1080p) resolution is no better looking than 720p resolution in smart phones. A full HD resolution is only better for tablets, laptop screens, or monitors where the human eyes can resolve such a high resolution. The smart phones having 720p resolutions and sizes ranging from 4.3 to 4.7 inches have PPIs within the range 312 to 341. This PPI range is more than enough. Therefore, Samsung’s claim to give a sensational screen experience is pretty pompous.
Whereas, a full HD resolution necessitates using larger screen size (at least 5 inches) which is pretty annoying for small-sized phones lovers.
Another issue is the increased power consumption. The extra features in electronic devices don’t come for free. The price usually has to be paid in terms of high power consumption. A full HD display makes more demand from the processor and the GPU, which in turn needs more power to help it cope.
Although, the S4 has much improved battery (2600 mAh) as compared to the S3 (2100 mAh), it is still not sure if we can get improved battery life as well. We must not forget that the Apple iPad 4′s screen has a higher than 1080p resolution (2048 x 1536, but a PPI of 264), and a battery rated as 11666 mAh, while the iPad2 has a less than 720p resolution (1024 x 768, 132 PPI). Yet both provide the same 10-hours of use before needing a recharge.
The only advantage of a full HD screen in smart phone is that it gives more space for user interface elements such as button and text. For example, a webpage can fit to the screen, but the size of the contents decreases due to high resolution. In most of the cases, the viewer has to zoom in the contents to view them easily.
Due to these reasons, I still prefer to stick to my Xperia S with 720p resolution and a PPI of 341.
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Interesting read. Though I can definitely tell there is a difference when comparing my lte and the HTC one side by side. That being said when they aren't side by side I can't tell.
Sent from my EVO using xda app-developers app
I would wager that you can only 'tell' because you read the spec .
My .02¢
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scottspa74 said:
I would wager that you can only 'tell' because you read the spec .
My .02¢
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I can see pixelation on my Evo's screen if I look closely. I can't see the same pixelation on the DNA's screen. There's a real difference, although you have to be a serious gadget nerd (like me) to care.
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scottspa74 said:
I would wager that you can only 'tell' because you read the spec .
My .02¢
Sent from my EVO using xda premium
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That's exactly my thinking.
maxpower7 said:
I can see pixelation on my Evo's screen if I look closely. I can't see the same pixelation on the DNA's screen. There's a real difference, although you have to be a serious gadget nerd (like me) to care.
Sent from my EVO using xda premium
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I honestly cannot tell the difference at all. Although I saw a slight difference between my 3D and this EVO LTE. Maybe because I knew the specs though =p. I'm a big fan of sleeping at night. Lol.
... Sent from my 'Maybe the LTEvo wasn't such a bad idea afterall,' using the XDA Developers app.
Just in case anyone is interested. I did some math in comparing the area of the pixel 3 screen to that of the pixel 2. The pixel 2 has a 16:9 aspect ratio with a diagonal of 5 inches. That results in a surface area of 10.68 sq inches. The pixel 3 has a 18:9 aspect ratio with a diagonal of 5.5 inches which results in surface area of 12.1 sq inches. The pixel 3 therefore has a screen area approximately 13.25% more than the pixel 2.
Pixel 2 - 67.9% screen to body ratio
Pixel 3 - 77.2% screen to body ratio