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Brightness and Contrast

To read about our monitor tests in-depth, please check out Display Testing Explained: How We Test PC Monitors. We cover brightness and contrast testing on page two.

Uncalibrated – Maximum Backlight Level

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AOC Agon Pro AG274QG — (Image credit: Tom's Hardware)

AOC specs 450 nits for the AG274QG’s SDR brightness, but my sample only got to 390 nits. This isn’t a deal-breaker because that’s a lot more light than one would need indoors. Even at 390 nits, you could play in a sunlit space, especially with the light hood installed.

Black levels are about average for the category, with the AG274QG finishing mid-pack. You can see the advantage held by the PD27’s VA screens, as its blacks are much deeper. With over 3,000:1 contrast, it has an impressive image, but the other screens are nearly identical in their dynamic range. The AG274QG has a usable dimming feature that ups SDR contrast to around 5,000:1 with no visible downside.

After Calibration to 200 nits

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After calibration, the AG274QG gained a second-place finish in the black level contest losing only to the PD27’s VA screen. Contrast is about the same as before but is slightly ahead of the other IPS displays. This is solid performance that can be enhanced by turning on the dimming feature.

ANSI contrast remains strong at 1,043.5:1, very close to the static number. The AG274QG is an excellent monitor with premium components and quality control. Its price isn’t low, but you are getting a high-end screen for sure.

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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.

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