Ask a die-hard home theater enthusiast to recommend a Blu-ray test disc for adjusting a TV’s picture and there’s just one response you’re likely to get: the Spears & Munsil UHD HDR Benchmark. I’ve used the Benchmark for testing the best 4K TVs and 4K projectors since it was first released in 2019, and it remains an indispensable tool for evaluating picture quality and fine-tuning displays for optimal performance. And while the best streaming services have far surpassed 4K Blu-ray
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