The picture quality is also very good otherwise. The viewing angle is very stable in all directions, the surface is non-reflective. The color space is unfortunately only sRGB and Adobe RGB is not höchtens remarkably like my monitor replaced, but that is in image processing. Other than that the color representation is good and well balanced.
Operation via a small joystick on the back is used to, but perfectly adequate, especially since often used functions without accessing the menu can be accessed directly via the joystick. The screen is narrow and the housing overall quite compact. The connections go to the back and do not look down. However, that does not matter because there is no other option than mounting on the supplied stand, which allows only a slight tilt adjustment, but no change in height. The lower edge is about 10 cm above the desk, which is acceptable, but could be like deep for me. There is no VESA mounting holes, which is the biggest limitation of this monitor in my view and the reason for the 4 star rating, because that one is quite limited in its capabilities, just due to the inflexible stand. The use of swivel arms or uprights alternative is ruled out.
Otherwise, it is important at 4K monitors to use a current operating system and the latest software versions. Many applications can not cope with the high resolution and showing tiny icons and menus, whereby the operator is sometimes very difficult (though at 28 inches at 150 dpi is not as strong as with high-resolution notebook displays). Windows has a significant better support for such monitors since 8.1 and scaled to small applications high. However, that does not always work (Tip: if necessary call right clicking on the App shortcut properties, compatibility and there "disable scaling on high DPI" setting try). The use of multiple monitors with different pixel density is probably reasonably well possible only since Windows 8.1. For me it works quite useful, even if the elements on the older monitors are shown partly something big.
