写しゃ真しん判はん定てい

noun, noun or participle which takes 'suru'

photo finish decision; deciding the winner from a photo

Used in sports such as horse racing, track and field, and cycling when the finish is too close to call by eye and a photograph is used to determine the winner.

• 競けい馬ばでは、ゴールが接せっ戦せんのとき写しゃ真しん判はん定ていが行おこなわれる。

  In horse racing, a photo finish decision is made when the finish is very close.

• 100メートル