<ul><li>The NFL will use Sony's Hawk-Eye cameras to measure the line to gain for first downs.</li><li>The 8K cameras will use virtual measurement technology to quickly and accurately determine if the ball traveled 10 yards.</li><li>The Hawk-Eye system consists of six 8K cameras that use optical tracking to determine the ball's position.</li><li>Sony's technology will offer a more efficient alternative to using sticks and a 10-yard chain to track the ball's position.</li></ul>

NFL swaps first-down chains for Sony’s 8K cameras

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