30" Apple Cinema Display vs 32" 4k monitor (Side by side pic?)

[Sharky II]

Hi there, does anybody have a comparison photos of a 30" ACD vs a 32" 4k monitor?

I'm thinking of getting a 32" Benq screen but the Apple is 16:10 vs the 16:9 of the Benq and most 4k and modern screens in general.

When I've used my father's 32" LG 4K monitor, it feels somehow smaller than my 30" ACD, perhaps due to the fact that it has a smaller bezel, as well as it being wider. But is it narrower....? That's what it feels like...

Most measurements online seem to include the bezel, not just the actual size of the LCD panel.

Thanks!

 

[joevt]

The diagonal (without bezel) of my 27" 16:9 4K is 27". x≈23.5325, y≈13.2371
The diagonal (without bezel) of my 30" 16:10 ACD is 30". x≈25.4399, y≈15.9
I assume the diagonal of a display claiming to be 32" is 32". x≈27.8904, y≈15.6884
The 30" and the 32" have nearly the same physical vertical height. Therefore, I don't think the Benq should appear smaller than the ACD.

Normally, you would use a 2560x1440 HiDPI mode on a 27" 16:9 screen which is 109 ppi (mode pixels). Since it's a HiDPI mode, you actually get 4 frame-buffer pixels and 1.6 screen pixels per mode pixel.

To get as much info vertically on a 16:9 display as the ACD, you would need to use a resolution of 2845x1600. Round that up to 2848x1602 for a perfect 16:9. The 32" would then have 102 ppi (mode pixels) vs 101 ppi for the ACD.

But the 32" is a 4K display so you'll want to use a 2848x1602 HiDPI mode that is 5696x3204 (204 frame-buffer pixels per inch) scaled down to 3840x2160 which is 138 ppi (screen pixels). This is 4 frame-buffer pixels and 1.8 screen pixels per single mode pixel. I think the imperfect scaling looks ok. If you look very closely, you might notice that same vertical or horizontal lines are thinner than others.

If you use 2560x1440 HiDPI mode on a 32" screen then that's 92 ppi (mode pixels). Since it's a HiDPI mode, you actually get 4 frame-buffer pixels and 2.25 screen pixels per mode pixel.

 

[Sharky II]

Thanks for the info - I would stick to the standard resolutions and scaling available - I was just talking about the physical height mainly.

I'd love to see a photo of a 30" ACD and a 31.5" or 32" 16:19 monitor side by side, if anybody has one!