We tested it with Local Dimming on 'High'. Overall, the local dimming makes highlights pop, but the blooming worsens the picture quality. Fast-moving objects transition between zones quickly, but the zone transitions are also noticeable due to the blooming. It's visible in 'Planet Earth', where stars behind the bright Earth are dim. Other than that, there isn't much black crush, but if there's one big bright highlight in a scene, other secondary highlights seem to be dimmer. The blooming is the main reason why we scored the local dimming so low. Subtitles are also hard to read because of it, and it causes some uniformity issues. It's noticeable in any content with bright objects, and it's very distracting. It helps improve the contrast by making blacks look deep, but there's intense blooming around bright objects. This is disappointing considering it's a high-end Mini LED TV with 1344 dimming zones, and it's not nearly as good as the Samsung QN90A QLED. The Samsung QN800A has a poor local dimming feature. The overall performance of the local dimming feature is about the same as before, but the blooming is a bit less noticeable, as the system is averaging out the brightness across more zones than before. Update : We retested the local dimming feature with the latest firmware available (1511). Our unit of the QN800A was manufactured in February 2021 you can see the label here. Note that some tests, like gray uniformity, may vary between units. If someone comes across a different type of panel or if their Samsung QN800A doesn't correspond to our review, let us know and we'll update the review. It's known as the Samsung QN850A at Costco and it's available in 75 and 85 inch sizes. We expect the QN800A in Europe to perform similarly, but we don't know for sure because Samsung's lineup is a bit different in Europe. We tested the 65 inch Samsung QN800A (QN65QN800A) variant, and for the most part, we expect our review to be valid for the 75 inch (QN75QN800A), and the 85 inch variants (QN85QN800A) available in North America. We retested the local dimming, peak brightness, color gamut, and color volume with the latest firmware (v.1511). We've corrected the response time charts and results, and updated the stutter score as well. There was a mistake in our response time results. We uploaded the initial brightness measurements and uniformity photos for the Accelerated Longevity Test. We uploaded the brightness measurements and uniformity photos after running the TV for two months in our Accelerated Longevity Test. The brightness changed between our initial measurements for the accelerated longevity test and the two-month update due to an automatic firmware update. We uploaded the brightness measurements and uniformity photos after running the TV for four months in our Accelerated Longevity Test. Smart Calibration Pro - Enjoy your screen the way the director intended using your mobile phone.We uploaded the latest brightness measurements and uniformity photos for the Accelerated Longevity Test.Anti-Glare with Ultra Viewing Angle - You've got the best view from every seat, no matter where you sit down.Resulting picture may vary based on source content. Real 8K Resolution and AI Upscaling - Marvel at the details within the details from 8K and the power of 33 million pixels.* *Utilizes AI-Based formulas to upscale to 8K Resolution.Dolby Atmos and Object Tracking Sound+ - Experience vividly realistic 3D sound that puts you in the middle of the action.Quantum HDR 32X - Every detail bursts to life with the realistic contrast and brilliance the director intended.Unleash the full power of 8K, thanks to our most intelligent processor yet. Incredible depth, stunning detail and industry-leading brightness. Edge-to-edge viewing on the endlessly stunning Infinity Screen. Spectacular contrast just as the director intended. 4.6 (348 ) Ultra-sharp lights, extreme contrast and jaw-dropping detail. Just tuck it away and immerse yourself in the beauty before you. Infinity One Design with Slim One Connect - Immerse yourself in a next level viewing experience with an impossibly slim profile. 85 QN900B Neo QLED 8K HDR Smart TV (2022) QE85QN900BTXXU.The product exists on 13 additional merchants that dont have an agreement with PriceRunner. Neural Quantum Processor 8K - For all you watch, experience AI-powered 8K, with 20 distinct neural networks.* *Utilizes AI-Based formulas to upscale to 8K Resolution. Samsung 75 Inch QN800B Neo QLED 8K Smart TV (2022) - True 8K Picture With Quantum Matrix Technology & Alexa Built In, Object Tracking Dolby Atmos Sound, Anti Reflection Screen, 100 Colour Volume.Quantum Matrix Pro with Mini LEDs - Experience out-of-this-world detail on a screen made brilliant by Samsung's own Mini LEDs.
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