Definition & Meaning of "photo finish"

What is a "photo finish"?

A photo finish is a situation in a race or competition where the result is so close that it is difficult to determine the winner with the naked eye. In such cases, a photograph or high-speed camera is used to capture the exact moment the participants cross the finish line, allowing officials to see who finished first. This technology ensures a fair and accurate determination of the winner when the difference between competitors is too small to judge in real-time. Photo finishes are commonly seen in sports like track and field, horse racing, and swimming.