For each MGM film Garbo was photographed on the set by a still photographer.
Garbo also had at least one session with a portrait photographer.

MGM Production:  332
Still photographer:  Milton Brown
Movie stills:  154
Portrait photographer:  Ruth Harriet Louise
Source:  Garbo - Portraits From Her Private Collection  by S. Reisfield & R. Dance

Ruth Harriet Louise made the portraits for the film.
The Stills were made during the production by Milton Brown.
154 Movie Stills were shot.
More about the film: click   HERE!