Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.
View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
274 posts

Ultimate Geek
+1 received by user: 10


  Reply # 2080178 28-Aug-2018 11:05
Send private message quote this post

geocom:

 

phrozenpenguin:

 

This is more what I was trying to understand. I don't quite understand the "trick" though as there are only a set number of pixels (4k) which halved is 1080p. Is this macOS doing some clever rescaling like it does on a Retina display if you go for the "More Space" option? To get true retina (pixel doubling) of 1440p you need to have a true 5k display.

 

 

It is complex but the very simplified explanation is that Apple has decided on 2x being a standard way to scale.

 

So yes by default a 4k screen is halved to look like 1080 however if you do want to set it to say something looking like 1440p macOS wont pixel double the images so they will just deliver these as 1x which looks bad especially if you just put down the cash for a 4k screen so to trick it you tell it you have a 5k screen instead of 4k and it will deliver you the 2x images your graphics card will just downsample this image to 4k

 

Apple have done this themselves with the iPhone. The plus has a 1080 screen on it the OS will draw a screen at 1242x2208 and downsample it to 1080 x 1920 https://www.paintcodeapp.com/news/iphone-6-screens-demystified

 

Interesting. So upshot is you can run a 4k monitor at 1440p "equivalent" and it looks great?


507 posts

Ultimate Geek
+1 received by user: 114

Subscriber

  Reply # 2080205 28-Aug-2018 11:44
Send private message quote this post

phrozenpenguin:

 

Interesting. So upshot is you can run a 4k monitor at 1440p "equivalent" and it looks great?

 

 

Looks a lot better than a physical 27" 1440p monitor and Apples default attempt at 1440 scaling on a 4k monitor. It looks sharp and really nice, I have tied to see how much difference there is between Apples 5k monitor(iMac 5k) and my 4k one and I cannot see a ton of difference esp when it comes to pixel density.





Geoff E

274 posts

Ultimate Geek
+1 received by user: 10


  Reply # 2080210 28-Aug-2018 11:56
Send private message quote this post

geocom:

 

phrozenpenguin:

 

Interesting. So upshot is you can run a 4k monitor at 1440p "equivalent" and it looks great?

 

 

Looks a lot better than a physical 27" 1440p monitor and Apples default attempt at 1440 scaling on a 4k monitor. It looks sharp and really nice, I have tied to see how much difference there is between Apples 5k monitor(iMac 5k) and my 4k one and I cannot see a ton of difference esp when it comes to pixel density.

 

Thanks - that is very useful for me.


1 | 2 
View this topic in a long page with up to 500 replies per page Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.