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:  776
Still photographer:  Milton Brown
Movie stills:  122
Portrait photographer:  Clarence Sinclair Bull
Source:  Garbo - Portraits From Her Private Collection  by S. Reisfield & R. Dance

Clarence Sinclair Bull made the portraits of Garbo for the film.
The Stills were made during the production by Milton Brown.
122 Movie Stills were shot.
More about the film: click  HERE!