I am about to have the new MBP and a 4k or 5k monitor. I really like the size of the user interface elements on my 108dpi Dell U2711 I currently have, but I want more workspace and either 4k or 5k. I would like to calculate optimum screen sizes for 4k and 5k that would be able to display UI elements quite precisely near that 108dpi sweetspot using the same dpi scaling that OSX uses on Retina MBP (bigger text - more space). So I do not mean the basic resolution changing. But the information is really confusing and reviews seem to ignore this. Is there a common set of dpi scale factors that new 4k/5k monitors can use in OSX sierra/new MBP? Or is it different for each model? For example I found Eizos website stating that some of their 4k monitors have dpi scaling ratios of 100%, 127%, 150%, 200%, 255% source: http://www.eizoglobal.com/support/compatibility/dpi_scaling_settings_mac_os_x/ And my current rMBP has ratios 160%, 177%, 200%, 250%. And a couple of related questions: - Does that dpi scaling only work on some very selected displays or is it a common feature for all newish 4k & 5k displays if I use new MBP & Sierra? - Is there any RELIABLE 3rd party apps that can generate custom dpi scaling sizes? - If you happen to have a newish 4k/5k monitor, would you care to list the dpi scaling (Bigger text - More space) percentages that are available in Sierra? If you are not able to count the scaling percentage, you can just list the "screen resolutions" when using different options. - Does this even matter, or is it just the same if I just lover the monitor resolution to some step that is available? I mean back in the old days, using other than native monitor resolution was a total no-no, but with 4k & 5k it might be a different story. I work with design and also typography so the quality needs to be near identical to what is achieved using the OSX dpi scaling feature.