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:  430
Still photographer:  James Manatt
Movie stills:  145
Portrait photographer:  Ruth Harriet Louise and Edward Steichen
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 James Manatt.
145 Movie Stills were shot.
After the production, Garbo was photographed by Nickolas Muray for Vanity Fair.
More about the film: click  HERE!