Related, I had an interesting experience with an older 4k monitor and ultrahd bluray.
I had a dell UP3214Q monitor, and I got the bright idea to get a bluray player. The model I bought happened to support 4k ultrahd, so I hooked it up.
It looked pretty good... except ... wait, it was downscaling ultrahd to 1080p over HDMI.
So I tried making sure I had the right HDMI cables. Still 1080p.
Long story short -- nobody will tell you this straight out -- ultrahd bluray players require hdcp 2.2. strangely 1080p non-ultrahd disks upscaled to 4k.
hollywood sucks.
I tried a U3219Q (HDMI 2.0 and HDCP 2.2) and everything worked. (except the monitor is not as high quality with a little less viewing angle and some LED bleed at the lower edges)
If it says anything, most 4k movies out right now have cgi rendered in 1080p and then upscaled. Also, most cameraing, even if recorded in 4k, is not focused to 4k, but focused for 1080, so it's often fuzzy. Then some shots are more focused than others which is just annoying.
Avengers: End Game is the first movie to render for 4k and recorded with 4k in mind, and I am uncertain if any movies have come after it meeting that spec yet, so atm 4k bluray is sadly a gimmick anyways.
I had a dell UP3214Q monitor, and I got the bright idea to get a bluray player. The model I bought happened to support 4k ultrahd, so I hooked it up.
It looked pretty good... except ... wait, it was downscaling ultrahd to 1080p over HDMI.
So I tried making sure I had the right HDMI cables. Still 1080p.
Long story short -- nobody will tell you this straight out -- ultrahd bluray players require hdcp 2.2. strangely 1080p non-ultrahd disks upscaled to 4k.
hollywood sucks.
I tried a U3219Q (HDMI 2.0 and HDCP 2.2) and everything worked. (except the monitor is not as high quality with a little less viewing angle and some LED bleed at the lower edges)