The Omen 27u seamlessly supports HDR10 content with an automatic switch; no user intervention is required. All image options are grayed out, so you can’t adjust brightness or color, but I found excellent accuracy and nothing to complain about.
HDR Brightness and Contrast
The 27u easily earns DisplayHDR 400 status with a 451.5767-nit peak HDR white level. That means highlights pop and sparkle without undue harshness. With moderately aggressive dynamic contrast in operation, the black level is a respectable 0.0702 nit with contrast at 6,435.3:1. That’s a good level but the other monitors, save the Asus, score better. HDR still looks superior to SDR, though with plenty of depth and pop. While the Eve and Asus have very broad dynamic range for HDR content, the Omen 27u is much better than most of the HDR monitors I’ve reviewed. Its picture quality is appropriate for the price. To see more impact, you’ll have to spend a lot more money for a full-array LED or Mini LED display.
Grayscale, EOTF and Color
The Omen 27u is nearly faultless in its HDR color, EOTF and grayscale tests. The chart shows a slight blue tint at high brightness levels, but this is an invisible error. The EOTF is a tad dark from 10 to 40%, which adds a little extra depth at the expense of shadow detail visibility. It’s all there, just harder to see clearly. Most HDR games have their own adjustments to help with these issues.
I’ve included gamut charts for both DCI-P3 and Rec.2020 color. The Omen 27u is a DCI-P3 monitor, and it renders that gamut with a little over-saturation. That’s not a bad thing as the targets progress linearly, which keeps detail from being crushed. Hue targets are spot on except for magenta, which is a touch blue. The Rec.2020 test shows similar behavior until the monitor runs out of color at around 90%. Both red and green alter the hue at that point to simulate greater saturation, which works well in practice. The Omen 27u is an excellent HDR monitor in every respect.