“Rehearsal everyone! Settle please! Rehearsal up! Quiet please! Stand by. Very quiet. Ready. And action!”

These were words heard over and over on the Chamberlin Ranch May 12 as production crews gathered to film part of the Japanese feature film “Leonie.” When producers went looking for the people and a setting to accurately depict life in the early American west, the Santa Ynez Valley was an obvious choice.

About 20 Santa Ynez Valley residents worked as extras during filming, which took place May 11, 12 and 13. The ranch was used as the setting for a small settlement just outside Pasadena in 1904, where settlers are trying to eke out an existence in the hard scrabble life of the time.

Buellton-based company Magic Casting, owned by Lee Sonja Kissik, rounded up the local talent for the three-day shoot.

“Leonie,” a film directed by Hisako Matsui and starring Emily Mortimer and Shido Nakamura, is based on the life of Leonie Gilmour, the American wife of Japanese writer Yone Noguchi and mother of sculptor Isamu Noguchi.

The film stars Mortimer (“Notting Hill,” “Bright Young Things”) and Nakamura (“Letters from Iwo Jima” “Fearless”), Christina Hendricks (“Mad Men”) and Mary Kay Place (“Mary Hartman, Mary Hartman,” “Private Benjamin,” “The Big Chill”).

Three local horsemen, Fred Chamberlin, Ryan Marell and Vern McWilliams, appear in the movie as wagon drivers. On the hot and dusty set May 12, Chamberlin sat atop a wagon pulled by two draft horses as Mortimer and Place rehearsed and then shot several scenes.

Local extras for the film include Amy Peet, Gail Steele Moyer, Christa Carole, Ashley Macias, Jan Henning, Jesse Sherman, Jason Rhienhold, Jordan Breschini, David Cappell, Rick Ferguson, Robin Metz, Stuart Wagner, James Carrera, Ray Wolf and Ian Young.

Their work, in which they were all dressed in period clothing, is mostly waiting for the director to yell, “Action!” For their efforts they were paid $112 for each 10 hours of work.

Christina Castellan, 21, was working as the stand-in for Mortimar on the ranch set. She has worked in front of the camera and behind the scenes since she was about 16, she said. Lynn Robinson, a valley resident and marketing manager for Greenhills Software in Santa Barbara, was the stand-in for Place.

Robinson said she first worked as an extra when one of her daughter’s friends told her about it. It was kind of a lark, she said.

“I’ve only done a few of these,” Robinson said as she checked work on her Blackberry and waited to be called on set. “I just can’t afford to take too much time from work.”

And finally, 7-week-old Jordyn Oltman, one of the valley’s newest locals, was the “Baby Isamu photo double,” according to production notes.

Another resident makes it in Hollywood.