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:  476
Still photographer:  Unknown (probably Milton Brown)
Movie stills:  97
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.
It is unknown who made the stills.
It is possible that it was Milton Brown.
97 Movie Stills were shot.
More about the film: click  HERE!