Which action is NOT part of the dolly grip's responsibilities?

The role of a dolly grip primarily revolves around operating a dolly, which is a wheeled cart or similar device used to create smooth camera movements during filming. This includes pushing or pulling the dolly, which allows the camera to move smoothly along tracks or on uneven terrain, thereby facilitating dynamic shots and transitions in the film.

Adjusting camera focus, however, falls outside the dolly grip's typical responsibilities. This task is usually the domain of the camera operator or the first assistant camera (1st AC), who are specifically trained to manage focus during filming. Focus adjustment requires a separate skill set and knowledge of the camera system that the dolly grip is not generally responsible for.

The other actions listed—pushing the dolly, pulling the camera, and making smooth transitions—are integral parts of a dolly grip's job, as they ensure that the visual storytelling is fluid and aesthetically pleasing.