“People come to Paris and they focus on the fair,” the New York art adviser Candace Worth said at the Wednesday preview of the 42nd edition of FIAC at the Grand Palais. This year’s edition, which closes on Sunday, features 173 galleries from 23 countries. Frieze London and Frieze Masters had a total of 294 booths.

“In London, there’s so much going on, it’s a distraction,” Ms. Worth said. “You get pulled in more directions. You don’t have nearly as much in the contemporary art market here. And yet who doesn’t like coming to Paris?” Ms. Worth said that quality levels of new contemporary works at FIAC compared with Frieze London (whose 13th edition closed on Oct. 17) were broadly similar.