I am considering upgrading my monitor for lunar image processing/enjoyment. My laptop is fairly old, so while it has USB3.0, the internal graphics card does not support 4K. I have looked into it and you get get USB3.0 4K, 60 Hz external graphics adapters fairly cheap. Since I won't be playing games or doing any 3D graphics on this machine I don't anticipate the low bandwidth and high latency of USB3.0 to be much of a problem. The increase in screen resolution would be a huge upgrade over my current HD screen.
However, I have been unable to find any of the USB3.0 4K adapters that supports HDR10 (High Dynamic Range 10). That means 10 bits per channel color instead of 8. That's 1024 gradations of color instead of 256, for a total of over 1 billion displayable colors. The biggest difference is in color banding, and for me it would allow higher gamma corrections without blowing out highlights, which is something your eye does naturally. So essentially it would allow brighter images of the Moon without relative loss of color resolution in the highlights. I know the difference is probably subtle, but I would really prefer it if I could find one. And yes, I am aware I would have to process images differently to share, as most people would be viewing on 8 bits per channel displays.
My plan is to get an 8 bpc 4K adapter and a 4K monitor that supports HDR10. Then when (hopefully) a new USB3.0 graphics device comes out that supports HDR10, I can grab one of those. Or maybe by that time my laptop will have given up the ghost finally and I'll get something that natively support it.
So, I'm basically just looking to have a discussion on your lunar processing workstation resolution, color depth, and whether you think HDR10 would make as big an impact as I hope it might. Oh, and whether you know of any USB3.0 4K external graphics adapters that support HDR color depth.
For what it's worth there are also 12 bit per channel displays, for 4096 gradations of color per channel and 64 billion colors, but that is probably overkill and way beyond my budget.