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The EX2510S switches to HDR mode automatically when an HDR10 signal is detected. There, you get three presets, HDRi Game, HDRi Cinema and HDR. The latter is the best choice for accuracy but the HDRi modes can be used with SDR content as an emulation if you wish.
HDR Brightness and Contrast
The EX2510S earns its DisplayHDR 400 certification with output of just over 410 nits. This is plenty of brightness for punchy highlights and vivid color. Unfortunately, there is no dynamic contrast in operation because the ratio is only a tad higher than SDR, 1,136:1. This is where the HP and MSI displays have a clear advantage. BenQ missed an opportunity to improve upon the EX2510 from last year.
Grayscale, EOTF and Color
The EX2510S’s HDR color accuracy is excellent when you choose the HDR preset. You can see how blue the grayscale is when using the HDRi Game option. And the EOTF is much too dark, even past the tone-map transition point. While the picture looks more contrasty at first glance, you’ll notice a lack of shadow and midtone detail. The HDR mode shows everything throughout the brightness range and has a near-perfect white balance.
When measured against the DCI-P3 standard, the EX2510S does well as an sRGB monitor. It hits the targets until it runs out of red, green and cyan. This means HDR content will look more colorful than SDR. Though there is no more contrast available, color is superior. BenQ does this a bit better than most of its rivals.
Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors. Christian began his obsession with tech when he built his first PC in 1991, a 286 running DOS 3.0 at a blazing 12MHz. In 2006, he undertook training from the Imaging Science Foundation in video calibration and testing and thus started a passion for precise imaging that persists to this day. He is also a professional musician with a degree from the New England Conservatory as a classical bassoonist which he used to good effect as a performer with the West Point Army Band from 1987 to 2013. He enjoys watching movies and listening to high-end audio in his custom-built home theater and can be seen riding trails near his home on a race-ready ICE VTX recumbent trike. Christian enjoys the endless summer in Florida where he lives with his wife and Chihuahua and plays with orchestras around the state.