photo finish(n = noun.event) - in general, any very close finish; in particular, a finish of a race in which the contestants are so close together that the winner must be determined from a photograph taken at the instant of finishing;
is a kind of finish

finish, finish coat, finish line, finish off, finish out, finish up, first-place finish, from start to finish, photo, photo credit, photo offset, photo op, photo opportunity, runner-up finish, second-place finish, third-place finish