Display Enlightment by NCX

I set my monitors to output 140cdm/2 when displaying pure white, and use them with a 2200 lumen ceiling light or 5x LIFX BR30 lights.  I do not recommend using more than 80cdm/2 brightness when using displays in a light-less room.  The LG AH-IPS panel in the 27UL550 does not suffer from obvious back-light bleed, glow, or uniformity flaws, but it is not perfect since the top left and right corners are a tiny bit lighter, or higher measured black level than the rest of the panel.  Fortunately these minor imperfections are only visible when viewing the monitor in a light-less room with high brightness.