Basically the elements will be scaled up to HiDPI, just like the retina MacBook Pros. It'll have an effective resolution of 3840x2160, but the UI and elements will be scaled to as if it's 1920x1080.
Hmm.. so a "smaller" screen real-estate.
Basically the elements will be scaled up to HiDPI, just like the retina MacBook Pros. It'll have an effective resolution of 3840x2160, but the UI and elements will be scaled to as if it's 1920x1080.
I consider the 2560x1440 resolution that 27" iMacs and Apple Thunderbolt Displays currently ship to be "Retina" under normal viewing distances of at least 2.5ft away. In fact, 2560x1440 is beyond 1920x1080 HD resolution and is in 2K territory. The next logical step would for Apple to take is to bump displays up to 4K.
Of course, the only problem that 4K as well as 2K has been encountering is the lack of content. We have had the 2560x1440 resolution since 2009 when Apple debuted it in the iMac yet mainstream video content maxes out at 1080p. Applications and websites aren't resolution independent or take full advantage of 2560x1440 either.
With that said, what's the point of having all this great hardware when nothing takes advantage of it?
How do you "retina" a 27"?
4K (3840 x 2160 pixels) on a 27" means really, really small icons and almost unreadable fonts and menus.
Would a retina iMac 27" mean 4K, but "showing as 1920 x 1080" and 4 times sharper?
Then the icons would become a bit big, and screen real-estate could be an issue.
Something in the middle?
I.e. 2560 x 1440 "4 x retina'd"? But that would require "real resolution" of 5120 x 2880. I don't think that grfx cards out there support that, and if they do, I wonder what the performance would be.
Is there another way?
Retina isn't anything else but a very high definition display, it's not any specific resolution. The idea behind it is that at the average viewing distance, individual pixels cannot be seen, making the display about as accurate as the human retina.
As for 4K in iMac, it'll happen sooner or later. We probably won't see an update until H2'14 anyway (no new CPUs until then), so it's possible that we'll see iMac going 4K this year already.
Hmm.. so a "smaller" screen real-estate.
I don't think so. My 15" rMBP at 2880x1800 displays things at exactly the same dimensions and size as the cMBP's 1440x900 display, just that it's way sharper.
Retina is technically Apple's very specific implementation of a high-res display.
Take for example their retina MacBooks. They sport a resolution of 2560x1600, yet still yield the same useable screen space as a typical 1280x800 macbook, just that everything appears clearer and brighter due to the display sporting more pixels.
Apple is able to do this because they write their own custom drivers and filters for their hardware to enable this retina display.
If you had a laptop using a normal 2560x1600 display, everything would just appear ridiculously small instead.
I recall reading somewhere that it may be possible to "fake" retina resolution on a 27" iMac by using a 4k resolution and using software drivers to do the rest. Can't recall the specifics though.
Considering 4K is 2160 lines or so, halving that with scaled resolutions would see a real estate reduction from 1440 to 1080, so a considerable reduction. To achieve the same doubling that the rMBPs and iOS devices have seen would require 2880 lines, far higher than 4K.
There are four options:
1. Scale a 4K monitor with two pixels into one, as done in the rMBP and iOS devices. This leaves an effective resolution of 1080, far lower than 1440
2. Scale a 4K monitor at an odd fraction, from 2160 to 1440 effective pixels. This can be less sharp than scaling by a factor of two. (personally, I can barely see any difference in sharpness between the various scaled resolutions of my rMBP)
3. Double the screen resolution to 2880 lines. Not practical in terms of current graphics card performance.
4. Something else Apple has up their sleeves.
I don't think so. My 15" rMBP at 2880x1800 displays things at exactly the same dimensions and size as the cMBP's 1440x900 display, just that it's way sharper.
This is not that complicated. iMac case generations run 2.5 years per:
http://support.apple.com/kb/ht1758
The second year of the current gen just started, leaving 2015 before the next case is due. Unless apple radically changes screens without changing the case (unprecedented) or makes a new case in 1.5 years (unprecedented), we won't see a retina imac this year.
1920x1080, when doubled in each direction, gives 3840x2160. So it's a perfect match. This is for the 21.5"
Meanwhile for the 27", you're right. Apple has to push it to 5120x2880 to get the same effect like the rMBPs.
Maybe Apple should just stick back to the 'retina' name, because 3840x2160 is essentially doubled from 1920x1080 in each direction, just like how 2880x1880 is doubled from 1440x900 in the rMBPs. By now, I think it's safe to assume that Apple will just double the pixels in each direction.
Considering 4K is 2160 lines or so, halving that with scaled resolutions would see a real estate reduction from 1440 to 1080, so a considerable reduction. To achieve the same doubling that the rMBPs and iOS devices have seen would require 2880 lines, far higher than 4K.
There are four options:
1. Scale a 4K monitor with two pixels into one, as done in the rMBP and iOS devices. This leaves an effective resolution of 1080, far lower than 1440
2. Scale a 4K monitor at an odd fraction, from 2160 to 1440 effective pixels. This can be less sharp than scaling by a factor of two. (personally, I can barely see any difference in sharpness between the various scaled resolutions of my rMBP)
3. Double the screen resolution to 2880 lines. Not practical in terms of current graphics card performance.
4. Something else Apple has up their sleeves.
I think they will go with a 4k display, not retina.
Is that quite the case? My 15" rMBP is scaled at 1920x1200.
A "retina'd" 1920 x 1080 has less screen real-estate than the current "native" 2560 x 1440.
iMacs will be skipping the retina display and go to 4K. We will see the 4k display for the Mac Pro before the iMac gets it.
Retina is just a marketing name. It's a formula that combines pixel density of the display and distance to it. The 27" iMac would be (according to Apples definition) be Retina (according to Apple this is, when the human eye is no longer able to see individual pixels or something like this) at over 32 inches.
Imo I think they will either go 4K on both (21 and 27) model and offer different scaling options and maybe give the 27 a better display (higher gamut and stuff like that), thus making the 21 a pure consumer device and the 27 a device that could be used by professionals too.
The other option would be, that they wait another year for a possible 5120 x 2880 display
some guys getting crazy talking about a 4k imac and didnt think about the gpu power that is needed to drive this resolution properly.
especially when it comes to games. imagine a 28" 4K imac, playing games on 1080p cause the gpu cant handle the native 4k resolution. this will look really bad. even 4K gaming on a PC is just possible with a high specced gaming rig.
i dont think that there will be a sufficient (mobile) gpu that is powerful enough to provide a good overall experience. even if it does, then gaming might be a pain in the a**.
personally i think that the almost retina like 1440p resolution of the current imac is totally sufficient. 1880p will be ok too, but any more will be a lag of performance.
dont get me wrong... if there are non-mobile gpu iMac`s in future, then a 4k display iMac would be awesome!
Apple has never made Macs to be "gaming" computers. They are primary aimed at average consumers and creative pros. If 4K resolution benefits the masses (and they can make good margins), they'll do it regardless of whether you can play Call of Duty at full native res IMO.
some guys getting crazy talking about a 4k imac and didnt think about the gpu power that is needed to drive this resolution properly.
especially when it comes to games. imagine a 28" 4K imac, playing games on 1080p cause the gpu cant handle the native 4k resolution. this will look really bad. even 4K gaming on a PC is just possible with a high specced gaming rig.
actually I think that 1080p games on a 4k display would probably look awesome (best for retina)
I think it would look kind of crappy full screen at 1920x1080 on a 4K display.
actually I think that 1080p games on a 4k display would probably look awesome (best for retina)
thats what i said, isn`t it?
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i still dont.
even on my imac 27" 1080p games look just blurry and ******... imagine this on a 4k screen... horrible.
They look horrible because of the scaling. On a 4k screen, they would be pixel doubled, so they would actually look normal.