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:  440
Still photographer:  Milton Brown
Movie stills:  135
Portrait photographer:  Clarence Sinclair Bull
Source:  Garbo - Portraits From Her Private Collection  by S. Reisfield & R. Dance

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