Why does my rMBP show 3840x2400 ?

[KKStoklund]

Hi people,

I just got a new 15" Haswell MBP. Why does it say that the screen is 3840x2400 when it's only 2880x1800?

When I take a screenshot of the entire screen and open it up in Photoshop, the image also 3840x2400.

Thanks

 

[Shmanky]

Hey, no fair; you got extra pixels!

 

[jawee]

Shows 3360x2100 on the 13 inch haswell rmbp. Can't answer your question though.

 

[Trixxr]

that is a really good question!
I haven't received mine - so I don't have any input (except for a thread bump)

 

[Creep89]

It shows you 3840x2400 because you set the resolution in the system preferences to 1920x1200. As a result, the graphic card renders the whole picture at 3840x2400 and scales it down to 2880x1800. It's really weird and I think Apple should always show 2880x1800 instead of the virtual resolution.

 

[laurihoefs]

It shows you 3840x2400 because you set the resolution in the system preferences to 1920x1200. As a result, the graphic card renders the whole picture at 3840x2400 and scales it down to 2880x1800. It's really weird and I think Apple should always show 2880x1800 instead of the virtual resolution.

This. OP, try changing the resolution to 'Best for retina', and it will show the native resolution.

I agree, that it's strange the resolution is reported thet way in About this Mac. I had not noticed that before.