Review on Lenovo Ultra Thin FreeSync DisplayPort 65FAGCC2US 28", 3840X2160P, 75, Tilt Adjustment, Anti-Glare Coating, Wall Mountable, ‎L28U-30, IPS by Matthew Mack

That's a good number, but the image at 300 nits is very weak compared to the 300 nits claimed by my 28-inch Samsung S60A. (much better option in this price/size range, albeit 2k instead of 4k). No matter what settings I tried, I couldn't get the gray to be gray instead of blue or magenta. After all, I was expecting mid-range performance at this price point, but the issues it has are what you'd expect from a cheaper screen.