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: 1100
Still photographer: William Grimes
Movie stills: 79

Portrait photographer: Clarence Sinclair Bull
The Stills were made during the production by Bertram (Buddy) Longworth and Fred Morgan.
146 Movie Stills were shot.

Clarence Sinclair Bull made the portraits of Garbo for the film.
The Stills were made during the production by William Grimes.
79 Movie Stills were shot.
Source: Garbo - Portraits From Her Private Collection by S. Reisfield & R. Dance

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Stills