A photo finish is an ending so close a picture must settle it. Call a photo finish.
The camera records a thin strip of the line continuously rather than taking a snapshot. A photo finish image looks distorted for that reason, and it is still exact.
1nounphoto finishAn ending so close a picture must settle it.
“The photo finish took four minutes to announce.”
photo finish is a finish.
Practised in Horses & Riding