We measured the SDR peak brightness after calibration, using the 'Calibrated Dark' Picture Mode, with Backlight at max, Active Full-Array set to 'High', Gamma set to 2.2, and Color Temperature set to 'Warm'. However, the brightness varies a lot across different content, and generally gets dimmer as large, bright areas cover the screen. It's more than enough to overcome glare, so you shouldn't have any visibility issues in well-lit environments. The Vizio P Series Quantum X 2021 has excellent SDR peak brightness. As such, we're posting the results from the initial calibration. However, while this new calibration addressed the red tint issue, it causes the appearance of faint yellow-green lines when displaying shades of white or blue, as well as causing a drop of about 100 cd/m² in brightness. Update : We've retested the SDR peak brightness after updating to the newest firmware (version 5.10.13.1-2) using a new calibration. As such, we're keeping the original calibration. We attempted a different calibration to address this issue and it removed the red tint however, it caused yellow-green lines to appear when displaying shades of white or blue. It isn't due to calibration, as it persists even after performing a calibration reset. Note: Our unit has a reddish tint that's present when displaying an image from any of its HDMI ports, which is why some of the photos in the review look a bit red. Also, even though its SmartCast interface is user-friendly, it doesn't have as many apps as other platforms since Vizio doesn't have an app store. Unfortunately, it has pretty narrow viewing angles, so it might not be the best option for wide seating arrangements. Its low input lag should please most gamers, and it supports variable refresh rate (VRR) to reduce screen tearing. It has a fast response time and a Black Frame Insertion feature, resulting in clear images in fast-moving scenes. Its high peak brightness fights glare easily and delivers an exceptional HDR experience with bright highlights.
It has a VA panel with a high contrast ratio, which is further enhanced by a full-array local dimming feature, allowing it to produce deep blacks. The Vizio P Series Quantum X 2020 is a great 4k TV that delivers stunning picture quality.
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