Anyone know the DPI of the 24" iMac?

[Greg Titus]

On Oct 19, 2006, at 14:16 , Scott Anguish wrote:

> well, I did do that... but I wasn't confident in the results...
>
> especially when you run Quartz Debug on a 23" display and look at  
> the User Interface Resolution and it says 72 dpi
>
> the calculation on the other hand gives you
>
> (1920 * 1920) + (1200 * 1200)
> = 5126400
>
> sqrt(5126400) / 23
> = 98.441542247547 dpi
>
> which just doesn't jive.
>
> that's why I was hoping someone could either run Quartz Debug, or  
> my little app.

At least as of 10.4.8, you can't trust the screen resolution that you  
get from the CGScreen info functions. It will always return 72 dpi no  
matter what the hardware is, as far as I can tell.

	- Greg