[Joeri]

So basically until displays advertise their physical specifications to Windows, and the Windows display stack takes advantage of that to auto-calibrate, it cannot match this kind of output.

I wonder what happens if you try this on the LG 5K hooked up to a mac. It is physically the same panel that's in the iMac, so in theory it can present the same range. But if the OS needs to know the exact physical abilities of the display, it might not be able to detect that LG display. Or maybe apple does detect it, because they partnered with LG.

[hultner]

I tried, I have an LG UltraFine 5k connected to an 5k iMac (2019) it works on the iMac but not the LG.

This might explain why I’ve experienced a slight difference when working with photos and video on the iMac monitor vs the LG UF5k. Interestingly I have a small program synchronizing the brightness of my LG with the iMac, the LG would light up ever time I opened the video on the iMac and then come back down on closing. This might explain som weird brightness behaviors I’ve been noticing on the 5k every now and then, I use to decouple the syncing whenever that happens and now I might know why.

[dylan604]

I was just going to ask the same question. Everything is pointing to macOS working so well because they own the entire chain. Throwing in the external monitors that Apple promotes would suggest that Apple might also work as smoothly with it as their own. So one more test would be to use a really nice monitor not promoted by Apple.

[IggleSniggle]

Not exactly related, but I’ve been using macOS, Windows, and (for the last week) Linux all on the same LG HiDPI screen (4K, but small screen), and no matter how I try to wrangle Windows I just can’t get it to look good. It’s incredibly frustrating when you know how good the monitor can look.

Linux seems better somehow but I haven’t had as much time with it there, so I’m not exactly sure why.